RuntimeLibcalls: Add entries for stack probe functions #167453
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@llvm/pr-subscribers-llvm-ir @llvm/pr-subscribers-backend-arm Author: Matt Arsenault (arsenm) ChangesStop hardcoding different variants of __chkstk and query the Full diff: https://github.com/llvm/llvm-project/pull/167453.diff 7 Files Affected:
diff --git a/llvm/include/llvm/IR/RuntimeLibcalls.td b/llvm/include/llvm/IR/RuntimeLibcalls.td
index ee80606ed0dbf..48d443acd1a2c 100644
--- a/llvm/include/llvm/IR/RuntimeLibcalls.td
+++ b/llvm/include/llvm/IR/RuntimeLibcalls.td
@@ -406,6 +406,7 @@ def STACK_SMASH_HANDLER : RuntimeLibcall;
// Safe stack
def SAFESTACK_POINTER_ADDRESS : RuntimeLibcall;
+def STACK_PROBE : RuntimeLibcall;
def SECURITY_CHECK_COOKIE : RuntimeLibcall;
// Deoptimization
@@ -1084,6 +1085,15 @@ def __stack_smash_handler : RuntimeLibcallImpl<STACK_SMASH_HANDLER>;
def __riscv_flush_icache : RuntimeLibcallImpl<RISCV_FLUSH_ICACHE>;
+def _chkstk : RuntimeLibcallImpl<STACK_PROBE>;
+def _alloca : RuntimeLibcallImpl<STACK_PROBE>;
+
+def __chkstk : RuntimeLibcallImpl<STACK_PROBE>;
+def ___chkstk_ms : RuntimeLibcallImpl<STACK_PROBE>;
+
+def __chkstk_ms : RuntimeLibcallImpl<STACK_PROBE>;
+def __chkstk_arm64ec : RuntimeLibcallImpl<STACK_PROBE, "#__chkstk_arm64ec">;
+
def __security_check_cookie : RuntimeLibcallImpl<SECURITY_CHECK_COOKIE>;
def __security_check_cookie_arm64ec : RuntimeLibcallImpl<SECURITY_CHECK_COOKIE,
"#__security_check_cookie_arm64ec">;
@@ -1260,6 +1270,9 @@ defvar SecurityCheckCookieIfWinMSVC =
LibcallImpls<(add __security_check_cookie, __security_cookie),
isWindowsMSVCOrItaniumEnvironment>;
+defvar __chkstk_IfWinMSVC =
+ LibcallImpls<(add __chkstk), isWindowsMSVCEnvironment>;
+
defvar LibmHasSinCosF32 = LibcallImpls<(add sincosf), hasSinCos>;
defvar LibmHasSinCosF64 = LibcallImpls<(add sincos), hasSinCos>;
defvar LibmHasSinCosF80 = LibcallImpls<(add sincosl_f80), hasSinCos>;
@@ -1418,6 +1431,7 @@ def AArch64SystemLibrary : SystemRuntimeLibrary<
DefaultLibmExp10,
DefaultStackProtector,
SecurityCheckCookieIfWinMSVC,
+ __chkstk_IfWinMSVC,
SMEABI_LibCalls_PreserveMost_From_X0,
SMEABI_LibCalls_PreserveMost_From_X1,
SMEABI_LibCalls_PreserveMost_From_X2)
@@ -1465,6 +1479,7 @@ def WindowsARM64ECSystemLibrary
LibcallImpls<(add __security_check_cookie_arm64ec,
__security_cookie),
isWindowsMSVCEnvironment>,
+ __chkstk_arm64ec,
ExceptionModelCallsArm64EC)>;
//===----------------------------------------------------------------------===//
@@ -1882,6 +1897,7 @@ def ARMSystemLibrary
WindowARMDivRemCalls,
WindowARMFPIntCasts,
SecurityCheckCookieIfWinMSVC,
+ LibcallImpls<(add __chkstk), isOSWindows>,
AEABIDivRemCalls,
DarwinSinCosStret, DarwinExp10,
LibmHasSinCosF32, LibmHasSinCosF64, LibmHasSinCosF128,
@@ -2552,6 +2568,19 @@ def isX86_32 : RuntimeLibcallPredicate<"TT.getArch() == Triple::x86">;
def isX86_64 : RuntimeLibcallPredicate<"TT.getArch() == Triple::x86_64">;
def isX86 : RuntimeLibcallPredicate<"TT.isX86()">;
+def isCygwinMinGW64 : RuntimeLibcallPredicate<
+ [{TT.isOSCygMing() && TT.getArch() == Triple::x86_64}]>;
+def isCygwinMinGW32 : RuntimeLibcallPredicate<
+ [{TT.isOSCygMing() && TT.getArch() == Triple::x86}]>;
+
+def isWin32NotCygMing : RuntimeLibcallPredicate<
+ [{TT.getArch() == Triple::x86 &&
+ (TT.isOSWindows() || TT.isUEFI()) && !TT.isOSCygMing()}]>;
+def isWin64NotCygMing : RuntimeLibcallPredicate<
+ [{TT.getArch() == Triple::x86_64 &&
+ (TT.isOSWindows() || TT.isUEFI()) && !TT.isOSCygMing()}]>;
+
+
// Some darwins have an optimized __bzero/bzero function.
def darwinHas__bzero : RuntimeLibcallPredicate<"TT.isMacOSX() && !TT.isMacOSXVersionLT(10, 6)">;
@@ -2581,8 +2610,12 @@ defvar X86CommonLibcalls =
// FIXME: MSVCRT doesn't have powi. The f128 case is added as a
// hack for one test relying on it.
__powitf2_f128,
- DefaultStackProtector
- );
+ DefaultStackProtector,
+ LibcallImpls<(add ___chkstk_ms), isCygwinMinGW64>,
+ LibcallImpls<(add __chkstk), isWin64NotCygMing>,
+ LibcallImpls<(add _alloca), isCygwinMinGW32>,
+ LibcallImpls<(add _chkstk), isWin32NotCygMing>
+);
defvar Windows32DivRemMulCalls =
LibcallsWithCC<(add WindowsDivRemMulLibcalls), X86_STDCALL,
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 8457f6178fdc2..b47795517b0c9 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -16851,11 +16851,15 @@ AArch64TargetLowering::LowerWindowsDYNAMIC_STACKALLOC(SDValue Op,
return DAG.getMergeValues(Ops, DL);
}
+ RTLIB::LibcallImpl ChkStkImpl = getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkImpl == RTLIB::Unsupported)
+ return SDValue();
+
Chain = DAG.getCALLSEQ_START(Chain, 0, 0, DL);
EVT PtrVT = getPointerTy(DAG.getDataLayout());
- SDValue Callee = DAG.getTargetExternalSymbol(Subtarget->getChkStkName(),
- PtrVT, 0);
+ SDValue Callee = DAG.getTargetExternalSymbol(
+ getLibcallImplName(ChkStkImpl).data(), PtrVT, 0);
const AArch64RegisterInfo *TRI = Subtarget->getRegisterInfo();
const uint32_t *Mask = TRI->getWindowsStackProbePreservedMask();
diff --git a/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp b/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp
index 965585f40571b..dcddcb50bd91e 100644
--- a/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp
+++ b/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp
@@ -1135,7 +1135,12 @@ void AArch64PrologueEmitter::emitWindowsStackProbe(
.setMIFlags(MachineInstr::FrameSetup);
}
- const char *ChkStk = Subtarget.getChkStkName();
+ const AArch64TargetLowering *TLI = Subtarget.getTargetLowering();
+ RTLIB::LibcallImpl ChkStkLibcall = TLI->getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkLibcall == RTLIB::Unsupported)
+ reportFatalUsageError("no available implementation of __chkstk");
+
+ const char *ChkStk = TLI->getLibcallImplName(ChkStkLibcall).data();
switch (MF.getTarget().getCodeModel()) {
case CodeModel::Tiny:
case CodeModel::Small:
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.h b/llvm/lib/Target/AArch64/AArch64Subtarget.h
index ab4004e30f629..8fc35bfeb01f9 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.h
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.h
@@ -450,12 +450,6 @@ class AArch64Subtarget final : public AArch64GenSubtargetInfo {
/// add + cnt instructions.
bool useScalarIncVL() const;
- const char* getChkStkName() const {
- if (isWindowsArm64EC())
- return "#__chkstk_arm64ec";
- return "__chkstk";
- }
-
/// Choose a method of checking LR before performing a tail call.
AArch64PAuth::AuthCheckMethod
getAuthenticatedLRCheckMethod(const MachineFunction &MF) const;
diff --git a/llvm/lib/Target/ARM/ARMFrameLowering.cpp b/llvm/lib/Target/ARM/ARMFrameLowering.cpp
index 21a113572ce93..db5674ca721cc 100644
--- a/llvm/lib/Target/ARM/ARMFrameLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMFrameLowering.cpp
@@ -1138,6 +1138,12 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF,
.add(predOps(ARMCC::AL));
}
+ const ARMTargetLowering *TLI = STI.getTargetLowering();
+ RTLIB::LibcallImpl ChkStkLibcall = TLI->getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkLibcall == RTLIB::Unsupported)
+ reportFatalUsageError("no available implementation of __chkstk");
+ const char *ChkStk = TLI->getLibcallImplName(ChkStkLibcall).data();
+
switch (TM.getCodeModel()) {
case CodeModel::Tiny:
llvm_unreachable("Tiny code model not available on ARM.");
@@ -1146,14 +1152,14 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF,
case CodeModel::Kernel:
BuildMI(MBB, MBBI, dl, TII.get(ARM::tBL))
.add(predOps(ARMCC::AL))
- .addExternalSymbol("__chkstk")
+ .addExternalSymbol(ChkStk)
.addReg(ARM::R4, RegState::Implicit)
.setMIFlags(MachineInstr::FrameSetup);
break;
case CodeModel::Large:
BuildMI(MBB, MBBI, dl, TII.get(ARM::t2MOVi32imm), ARM::R12)
- .addExternalSymbol("__chkstk")
- .setMIFlags(MachineInstr::FrameSetup);
+ .addExternalSymbol(ChkStk)
+ .setMIFlags(MachineInstr::FrameSetup);
BuildMI(MBB, MBBI, dl, TII.get(ARM::tBLXr))
.add(predOps(ARMCC::AL))
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index 92fae71121a81..220cf16589679 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -11727,6 +11727,11 @@ ARMTargetLowering::EmitLowered__chkstk(MachineInstr &MI,
// -mcmodel=large, alleviating the need for the trampoline which may clobber
// IP.
+ RTLIB::LibcallImpl ChkStkLibcall = getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkLibcall == RTLIB::Unsupported)
+ reportFatalUsageError("no available implementation of __chkstk");
+
+ const char *ChkStk = getLibcallImplName(ChkStkLibcall).data();
switch (TM.getCodeModel()) {
case CodeModel::Tiny:
llvm_unreachable("Tiny code model not available on ARM.");
@@ -11735,7 +11740,7 @@ ARMTargetLowering::EmitLowered__chkstk(MachineInstr &MI,
case CodeModel::Kernel:
BuildMI(*MBB, MI, DL, TII.get(ARM::tBL))
.add(predOps(ARMCC::AL))
- .addExternalSymbol("__chkstk")
+ .addExternalSymbol(ChkStk)
.addReg(ARM::R4, RegState::Implicit | RegState::Kill)
.addReg(ARM::R4, RegState::Implicit | RegState::Define)
.addReg(ARM::R12,
@@ -11748,7 +11753,7 @@ ARMTargetLowering::EmitLowered__chkstk(MachineInstr &MI,
Register Reg = MRI.createVirtualRegister(&ARM::rGPRRegClass);
BuildMI(*MBB, MI, DL, TII.get(ARM::t2MOVi32imm), Reg)
- .addExternalSymbol("__chkstk");
+ .addExternalSymbol(ChkStk);
BuildMI(*MBB, MI, DL, TII.get(gettBLXrOpcode(*MBB->getParent())))
.add(predOps(ARMCC::AL))
.addReg(Reg, RegState::Kill)
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 5bce539c45341..cd9e530284e08 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -62436,9 +62436,10 @@ X86TargetLowering::getStackProbeSymbolName(const MachineFunction &MF) const {
// We need a stack probe to conform to the Windows ABI. Choose the right
// symbol.
- if (Subtarget.is64Bit())
- return Subtarget.isTargetCygMing() ? "___chkstk_ms" : "__chkstk";
- return Subtarget.isTargetCygMing() ? "_alloca" : "_chkstk";
+ RTLIB::LibcallImpl StackProbeImpl = getLibcallImpl(RTLIB::STACK_PROBE);
+ if (StackProbeImpl == RTLIB::Unsupported)
+ return "";
+ return getLibcallImplName(StackProbeImpl);
}
unsigned
|
Member
|
@llvm/pr-subscribers-backend-aarch64 Author: Matt Arsenault (arsenm) ChangesStop hardcoding different variants of __chkstk and query the Full diff: https://github.com/llvm/llvm-project/pull/167453.diff 7 Files Affected:
diff --git a/llvm/include/llvm/IR/RuntimeLibcalls.td b/llvm/include/llvm/IR/RuntimeLibcalls.td
index ee80606ed0dbf..48d443acd1a2c 100644
--- a/llvm/include/llvm/IR/RuntimeLibcalls.td
+++ b/llvm/include/llvm/IR/RuntimeLibcalls.td
@@ -406,6 +406,7 @@ def STACK_SMASH_HANDLER : RuntimeLibcall;
// Safe stack
def SAFESTACK_POINTER_ADDRESS : RuntimeLibcall;
+def STACK_PROBE : RuntimeLibcall;
def SECURITY_CHECK_COOKIE : RuntimeLibcall;
// Deoptimization
@@ -1084,6 +1085,15 @@ def __stack_smash_handler : RuntimeLibcallImpl<STACK_SMASH_HANDLER>;
def __riscv_flush_icache : RuntimeLibcallImpl<RISCV_FLUSH_ICACHE>;
+def _chkstk : RuntimeLibcallImpl<STACK_PROBE>;
+def _alloca : RuntimeLibcallImpl<STACK_PROBE>;
+
+def __chkstk : RuntimeLibcallImpl<STACK_PROBE>;
+def ___chkstk_ms : RuntimeLibcallImpl<STACK_PROBE>;
+
+def __chkstk_ms : RuntimeLibcallImpl<STACK_PROBE>;
+def __chkstk_arm64ec : RuntimeLibcallImpl<STACK_PROBE, "#__chkstk_arm64ec">;
+
def __security_check_cookie : RuntimeLibcallImpl<SECURITY_CHECK_COOKIE>;
def __security_check_cookie_arm64ec : RuntimeLibcallImpl<SECURITY_CHECK_COOKIE,
"#__security_check_cookie_arm64ec">;
@@ -1260,6 +1270,9 @@ defvar SecurityCheckCookieIfWinMSVC =
LibcallImpls<(add __security_check_cookie, __security_cookie),
isWindowsMSVCOrItaniumEnvironment>;
+defvar __chkstk_IfWinMSVC =
+ LibcallImpls<(add __chkstk), isWindowsMSVCEnvironment>;
+
defvar LibmHasSinCosF32 = LibcallImpls<(add sincosf), hasSinCos>;
defvar LibmHasSinCosF64 = LibcallImpls<(add sincos), hasSinCos>;
defvar LibmHasSinCosF80 = LibcallImpls<(add sincosl_f80), hasSinCos>;
@@ -1418,6 +1431,7 @@ def AArch64SystemLibrary : SystemRuntimeLibrary<
DefaultLibmExp10,
DefaultStackProtector,
SecurityCheckCookieIfWinMSVC,
+ __chkstk_IfWinMSVC,
SMEABI_LibCalls_PreserveMost_From_X0,
SMEABI_LibCalls_PreserveMost_From_X1,
SMEABI_LibCalls_PreserveMost_From_X2)
@@ -1465,6 +1479,7 @@ def WindowsARM64ECSystemLibrary
LibcallImpls<(add __security_check_cookie_arm64ec,
__security_cookie),
isWindowsMSVCEnvironment>,
+ __chkstk_arm64ec,
ExceptionModelCallsArm64EC)>;
//===----------------------------------------------------------------------===//
@@ -1882,6 +1897,7 @@ def ARMSystemLibrary
WindowARMDivRemCalls,
WindowARMFPIntCasts,
SecurityCheckCookieIfWinMSVC,
+ LibcallImpls<(add __chkstk), isOSWindows>,
AEABIDivRemCalls,
DarwinSinCosStret, DarwinExp10,
LibmHasSinCosF32, LibmHasSinCosF64, LibmHasSinCosF128,
@@ -2552,6 +2568,19 @@ def isX86_32 : RuntimeLibcallPredicate<"TT.getArch() == Triple::x86">;
def isX86_64 : RuntimeLibcallPredicate<"TT.getArch() == Triple::x86_64">;
def isX86 : RuntimeLibcallPredicate<"TT.isX86()">;
+def isCygwinMinGW64 : RuntimeLibcallPredicate<
+ [{TT.isOSCygMing() && TT.getArch() == Triple::x86_64}]>;
+def isCygwinMinGW32 : RuntimeLibcallPredicate<
+ [{TT.isOSCygMing() && TT.getArch() == Triple::x86}]>;
+
+def isWin32NotCygMing : RuntimeLibcallPredicate<
+ [{TT.getArch() == Triple::x86 &&
+ (TT.isOSWindows() || TT.isUEFI()) && !TT.isOSCygMing()}]>;
+def isWin64NotCygMing : RuntimeLibcallPredicate<
+ [{TT.getArch() == Triple::x86_64 &&
+ (TT.isOSWindows() || TT.isUEFI()) && !TT.isOSCygMing()}]>;
+
+
// Some darwins have an optimized __bzero/bzero function.
def darwinHas__bzero : RuntimeLibcallPredicate<"TT.isMacOSX() && !TT.isMacOSXVersionLT(10, 6)">;
@@ -2581,8 +2610,12 @@ defvar X86CommonLibcalls =
// FIXME: MSVCRT doesn't have powi. The f128 case is added as a
// hack for one test relying on it.
__powitf2_f128,
- DefaultStackProtector
- );
+ DefaultStackProtector,
+ LibcallImpls<(add ___chkstk_ms), isCygwinMinGW64>,
+ LibcallImpls<(add __chkstk), isWin64NotCygMing>,
+ LibcallImpls<(add _alloca), isCygwinMinGW32>,
+ LibcallImpls<(add _chkstk), isWin32NotCygMing>
+);
defvar Windows32DivRemMulCalls =
LibcallsWithCC<(add WindowsDivRemMulLibcalls), X86_STDCALL,
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 8457f6178fdc2..b47795517b0c9 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -16851,11 +16851,15 @@ AArch64TargetLowering::LowerWindowsDYNAMIC_STACKALLOC(SDValue Op,
return DAG.getMergeValues(Ops, DL);
}
+ RTLIB::LibcallImpl ChkStkImpl = getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkImpl == RTLIB::Unsupported)
+ return SDValue();
+
Chain = DAG.getCALLSEQ_START(Chain, 0, 0, DL);
EVT PtrVT = getPointerTy(DAG.getDataLayout());
- SDValue Callee = DAG.getTargetExternalSymbol(Subtarget->getChkStkName(),
- PtrVT, 0);
+ SDValue Callee = DAG.getTargetExternalSymbol(
+ getLibcallImplName(ChkStkImpl).data(), PtrVT, 0);
const AArch64RegisterInfo *TRI = Subtarget->getRegisterInfo();
const uint32_t *Mask = TRI->getWindowsStackProbePreservedMask();
diff --git a/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp b/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp
index 965585f40571b..dcddcb50bd91e 100644
--- a/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp
+++ b/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp
@@ -1135,7 +1135,12 @@ void AArch64PrologueEmitter::emitWindowsStackProbe(
.setMIFlags(MachineInstr::FrameSetup);
}
- const char *ChkStk = Subtarget.getChkStkName();
+ const AArch64TargetLowering *TLI = Subtarget.getTargetLowering();
+ RTLIB::LibcallImpl ChkStkLibcall = TLI->getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkLibcall == RTLIB::Unsupported)
+ reportFatalUsageError("no available implementation of __chkstk");
+
+ const char *ChkStk = TLI->getLibcallImplName(ChkStkLibcall).data();
switch (MF.getTarget().getCodeModel()) {
case CodeModel::Tiny:
case CodeModel::Small:
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.h b/llvm/lib/Target/AArch64/AArch64Subtarget.h
index ab4004e30f629..8fc35bfeb01f9 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.h
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.h
@@ -450,12 +450,6 @@ class AArch64Subtarget final : public AArch64GenSubtargetInfo {
/// add + cnt instructions.
bool useScalarIncVL() const;
- const char* getChkStkName() const {
- if (isWindowsArm64EC())
- return "#__chkstk_arm64ec";
- return "__chkstk";
- }
-
/// Choose a method of checking LR before performing a tail call.
AArch64PAuth::AuthCheckMethod
getAuthenticatedLRCheckMethod(const MachineFunction &MF) const;
diff --git a/llvm/lib/Target/ARM/ARMFrameLowering.cpp b/llvm/lib/Target/ARM/ARMFrameLowering.cpp
index 21a113572ce93..db5674ca721cc 100644
--- a/llvm/lib/Target/ARM/ARMFrameLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMFrameLowering.cpp
@@ -1138,6 +1138,12 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF,
.add(predOps(ARMCC::AL));
}
+ const ARMTargetLowering *TLI = STI.getTargetLowering();
+ RTLIB::LibcallImpl ChkStkLibcall = TLI->getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkLibcall == RTLIB::Unsupported)
+ reportFatalUsageError("no available implementation of __chkstk");
+ const char *ChkStk = TLI->getLibcallImplName(ChkStkLibcall).data();
+
switch (TM.getCodeModel()) {
case CodeModel::Tiny:
llvm_unreachable("Tiny code model not available on ARM.");
@@ -1146,14 +1152,14 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF,
case CodeModel::Kernel:
BuildMI(MBB, MBBI, dl, TII.get(ARM::tBL))
.add(predOps(ARMCC::AL))
- .addExternalSymbol("__chkstk")
+ .addExternalSymbol(ChkStk)
.addReg(ARM::R4, RegState::Implicit)
.setMIFlags(MachineInstr::FrameSetup);
break;
case CodeModel::Large:
BuildMI(MBB, MBBI, dl, TII.get(ARM::t2MOVi32imm), ARM::R12)
- .addExternalSymbol("__chkstk")
- .setMIFlags(MachineInstr::FrameSetup);
+ .addExternalSymbol(ChkStk)
+ .setMIFlags(MachineInstr::FrameSetup);
BuildMI(MBB, MBBI, dl, TII.get(ARM::tBLXr))
.add(predOps(ARMCC::AL))
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index 92fae71121a81..220cf16589679 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -11727,6 +11727,11 @@ ARMTargetLowering::EmitLowered__chkstk(MachineInstr &MI,
// -mcmodel=large, alleviating the need for the trampoline which may clobber
// IP.
+ RTLIB::LibcallImpl ChkStkLibcall = getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkLibcall == RTLIB::Unsupported)
+ reportFatalUsageError("no available implementation of __chkstk");
+
+ const char *ChkStk = getLibcallImplName(ChkStkLibcall).data();
switch (TM.getCodeModel()) {
case CodeModel::Tiny:
llvm_unreachable("Tiny code model not available on ARM.");
@@ -11735,7 +11740,7 @@ ARMTargetLowering::EmitLowered__chkstk(MachineInstr &MI,
case CodeModel::Kernel:
BuildMI(*MBB, MI, DL, TII.get(ARM::tBL))
.add(predOps(ARMCC::AL))
- .addExternalSymbol("__chkstk")
+ .addExternalSymbol(ChkStk)
.addReg(ARM::R4, RegState::Implicit | RegState::Kill)
.addReg(ARM::R4, RegState::Implicit | RegState::Define)
.addReg(ARM::R12,
@@ -11748,7 +11753,7 @@ ARMTargetLowering::EmitLowered__chkstk(MachineInstr &MI,
Register Reg = MRI.createVirtualRegister(&ARM::rGPRRegClass);
BuildMI(*MBB, MI, DL, TII.get(ARM::t2MOVi32imm), Reg)
- .addExternalSymbol("__chkstk");
+ .addExternalSymbol(ChkStk);
BuildMI(*MBB, MI, DL, TII.get(gettBLXrOpcode(*MBB->getParent())))
.add(predOps(ARMCC::AL))
.addReg(Reg, RegState::Kill)
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 5bce539c45341..cd9e530284e08 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -62436,9 +62436,10 @@ X86TargetLowering::getStackProbeSymbolName(const MachineFunction &MF) const {
// We need a stack probe to conform to the Windows ABI. Choose the right
// symbol.
- if (Subtarget.is64Bit())
- return Subtarget.isTargetCygMing() ? "___chkstk_ms" : "__chkstk";
- return Subtarget.isTargetCygMing() ? "_alloca" : "_chkstk";
+ RTLIB::LibcallImpl StackProbeImpl = getLibcallImpl(RTLIB::STACK_PROBE);
+ if (StackProbeImpl == RTLIB::Unsupported)
+ return "";
+ return getLibcallImplName(StackProbeImpl);
}
unsigned
|
Member
|
@llvm/pr-subscribers-backend-x86 Author: Matt Arsenault (arsenm) ChangesStop hardcoding different variants of __chkstk and query the Full diff: https://github.com/llvm/llvm-project/pull/167453.diff 7 Files Affected:
diff --git a/llvm/include/llvm/IR/RuntimeLibcalls.td b/llvm/include/llvm/IR/RuntimeLibcalls.td
index ee80606ed0dbf..48d443acd1a2c 100644
--- a/llvm/include/llvm/IR/RuntimeLibcalls.td
+++ b/llvm/include/llvm/IR/RuntimeLibcalls.td
@@ -406,6 +406,7 @@ def STACK_SMASH_HANDLER : RuntimeLibcall;
// Safe stack
def SAFESTACK_POINTER_ADDRESS : RuntimeLibcall;
+def STACK_PROBE : RuntimeLibcall;
def SECURITY_CHECK_COOKIE : RuntimeLibcall;
// Deoptimization
@@ -1084,6 +1085,15 @@ def __stack_smash_handler : RuntimeLibcallImpl<STACK_SMASH_HANDLER>;
def __riscv_flush_icache : RuntimeLibcallImpl<RISCV_FLUSH_ICACHE>;
+def _chkstk : RuntimeLibcallImpl<STACK_PROBE>;
+def _alloca : RuntimeLibcallImpl<STACK_PROBE>;
+
+def __chkstk : RuntimeLibcallImpl<STACK_PROBE>;
+def ___chkstk_ms : RuntimeLibcallImpl<STACK_PROBE>;
+
+def __chkstk_ms : RuntimeLibcallImpl<STACK_PROBE>;
+def __chkstk_arm64ec : RuntimeLibcallImpl<STACK_PROBE, "#__chkstk_arm64ec">;
+
def __security_check_cookie : RuntimeLibcallImpl<SECURITY_CHECK_COOKIE>;
def __security_check_cookie_arm64ec : RuntimeLibcallImpl<SECURITY_CHECK_COOKIE,
"#__security_check_cookie_arm64ec">;
@@ -1260,6 +1270,9 @@ defvar SecurityCheckCookieIfWinMSVC =
LibcallImpls<(add __security_check_cookie, __security_cookie),
isWindowsMSVCOrItaniumEnvironment>;
+defvar __chkstk_IfWinMSVC =
+ LibcallImpls<(add __chkstk), isWindowsMSVCEnvironment>;
+
defvar LibmHasSinCosF32 = LibcallImpls<(add sincosf), hasSinCos>;
defvar LibmHasSinCosF64 = LibcallImpls<(add sincos), hasSinCos>;
defvar LibmHasSinCosF80 = LibcallImpls<(add sincosl_f80), hasSinCos>;
@@ -1418,6 +1431,7 @@ def AArch64SystemLibrary : SystemRuntimeLibrary<
DefaultLibmExp10,
DefaultStackProtector,
SecurityCheckCookieIfWinMSVC,
+ __chkstk_IfWinMSVC,
SMEABI_LibCalls_PreserveMost_From_X0,
SMEABI_LibCalls_PreserveMost_From_X1,
SMEABI_LibCalls_PreserveMost_From_X2)
@@ -1465,6 +1479,7 @@ def WindowsARM64ECSystemLibrary
LibcallImpls<(add __security_check_cookie_arm64ec,
__security_cookie),
isWindowsMSVCEnvironment>,
+ __chkstk_arm64ec,
ExceptionModelCallsArm64EC)>;
//===----------------------------------------------------------------------===//
@@ -1882,6 +1897,7 @@ def ARMSystemLibrary
WindowARMDivRemCalls,
WindowARMFPIntCasts,
SecurityCheckCookieIfWinMSVC,
+ LibcallImpls<(add __chkstk), isOSWindows>,
AEABIDivRemCalls,
DarwinSinCosStret, DarwinExp10,
LibmHasSinCosF32, LibmHasSinCosF64, LibmHasSinCosF128,
@@ -2552,6 +2568,19 @@ def isX86_32 : RuntimeLibcallPredicate<"TT.getArch() == Triple::x86">;
def isX86_64 : RuntimeLibcallPredicate<"TT.getArch() == Triple::x86_64">;
def isX86 : RuntimeLibcallPredicate<"TT.isX86()">;
+def isCygwinMinGW64 : RuntimeLibcallPredicate<
+ [{TT.isOSCygMing() && TT.getArch() == Triple::x86_64}]>;
+def isCygwinMinGW32 : RuntimeLibcallPredicate<
+ [{TT.isOSCygMing() && TT.getArch() == Triple::x86}]>;
+
+def isWin32NotCygMing : RuntimeLibcallPredicate<
+ [{TT.getArch() == Triple::x86 &&
+ (TT.isOSWindows() || TT.isUEFI()) && !TT.isOSCygMing()}]>;
+def isWin64NotCygMing : RuntimeLibcallPredicate<
+ [{TT.getArch() == Triple::x86_64 &&
+ (TT.isOSWindows() || TT.isUEFI()) && !TT.isOSCygMing()}]>;
+
+
// Some darwins have an optimized __bzero/bzero function.
def darwinHas__bzero : RuntimeLibcallPredicate<"TT.isMacOSX() && !TT.isMacOSXVersionLT(10, 6)">;
@@ -2581,8 +2610,12 @@ defvar X86CommonLibcalls =
// FIXME: MSVCRT doesn't have powi. The f128 case is added as a
// hack for one test relying on it.
__powitf2_f128,
- DefaultStackProtector
- );
+ DefaultStackProtector,
+ LibcallImpls<(add ___chkstk_ms), isCygwinMinGW64>,
+ LibcallImpls<(add __chkstk), isWin64NotCygMing>,
+ LibcallImpls<(add _alloca), isCygwinMinGW32>,
+ LibcallImpls<(add _chkstk), isWin32NotCygMing>
+);
defvar Windows32DivRemMulCalls =
LibcallsWithCC<(add WindowsDivRemMulLibcalls), X86_STDCALL,
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 8457f6178fdc2..b47795517b0c9 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -16851,11 +16851,15 @@ AArch64TargetLowering::LowerWindowsDYNAMIC_STACKALLOC(SDValue Op,
return DAG.getMergeValues(Ops, DL);
}
+ RTLIB::LibcallImpl ChkStkImpl = getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkImpl == RTLIB::Unsupported)
+ return SDValue();
+
Chain = DAG.getCALLSEQ_START(Chain, 0, 0, DL);
EVT PtrVT = getPointerTy(DAG.getDataLayout());
- SDValue Callee = DAG.getTargetExternalSymbol(Subtarget->getChkStkName(),
- PtrVT, 0);
+ SDValue Callee = DAG.getTargetExternalSymbol(
+ getLibcallImplName(ChkStkImpl).data(), PtrVT, 0);
const AArch64RegisterInfo *TRI = Subtarget->getRegisterInfo();
const uint32_t *Mask = TRI->getWindowsStackProbePreservedMask();
diff --git a/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp b/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp
index 965585f40571b..dcddcb50bd91e 100644
--- a/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp
+++ b/llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp
@@ -1135,7 +1135,12 @@ void AArch64PrologueEmitter::emitWindowsStackProbe(
.setMIFlags(MachineInstr::FrameSetup);
}
- const char *ChkStk = Subtarget.getChkStkName();
+ const AArch64TargetLowering *TLI = Subtarget.getTargetLowering();
+ RTLIB::LibcallImpl ChkStkLibcall = TLI->getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkLibcall == RTLIB::Unsupported)
+ reportFatalUsageError("no available implementation of __chkstk");
+
+ const char *ChkStk = TLI->getLibcallImplName(ChkStkLibcall).data();
switch (MF.getTarget().getCodeModel()) {
case CodeModel::Tiny:
case CodeModel::Small:
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.h b/llvm/lib/Target/AArch64/AArch64Subtarget.h
index ab4004e30f629..8fc35bfeb01f9 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.h
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.h
@@ -450,12 +450,6 @@ class AArch64Subtarget final : public AArch64GenSubtargetInfo {
/// add + cnt instructions.
bool useScalarIncVL() const;
- const char* getChkStkName() const {
- if (isWindowsArm64EC())
- return "#__chkstk_arm64ec";
- return "__chkstk";
- }
-
/// Choose a method of checking LR before performing a tail call.
AArch64PAuth::AuthCheckMethod
getAuthenticatedLRCheckMethod(const MachineFunction &MF) const;
diff --git a/llvm/lib/Target/ARM/ARMFrameLowering.cpp b/llvm/lib/Target/ARM/ARMFrameLowering.cpp
index 21a113572ce93..db5674ca721cc 100644
--- a/llvm/lib/Target/ARM/ARMFrameLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMFrameLowering.cpp
@@ -1138,6 +1138,12 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF,
.add(predOps(ARMCC::AL));
}
+ const ARMTargetLowering *TLI = STI.getTargetLowering();
+ RTLIB::LibcallImpl ChkStkLibcall = TLI->getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkLibcall == RTLIB::Unsupported)
+ reportFatalUsageError("no available implementation of __chkstk");
+ const char *ChkStk = TLI->getLibcallImplName(ChkStkLibcall).data();
+
switch (TM.getCodeModel()) {
case CodeModel::Tiny:
llvm_unreachable("Tiny code model not available on ARM.");
@@ -1146,14 +1152,14 @@ void ARMFrameLowering::emitPrologue(MachineFunction &MF,
case CodeModel::Kernel:
BuildMI(MBB, MBBI, dl, TII.get(ARM::tBL))
.add(predOps(ARMCC::AL))
- .addExternalSymbol("__chkstk")
+ .addExternalSymbol(ChkStk)
.addReg(ARM::R4, RegState::Implicit)
.setMIFlags(MachineInstr::FrameSetup);
break;
case CodeModel::Large:
BuildMI(MBB, MBBI, dl, TII.get(ARM::t2MOVi32imm), ARM::R12)
- .addExternalSymbol("__chkstk")
- .setMIFlags(MachineInstr::FrameSetup);
+ .addExternalSymbol(ChkStk)
+ .setMIFlags(MachineInstr::FrameSetup);
BuildMI(MBB, MBBI, dl, TII.get(ARM::tBLXr))
.add(predOps(ARMCC::AL))
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index 92fae71121a81..220cf16589679 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -11727,6 +11727,11 @@ ARMTargetLowering::EmitLowered__chkstk(MachineInstr &MI,
// -mcmodel=large, alleviating the need for the trampoline which may clobber
// IP.
+ RTLIB::LibcallImpl ChkStkLibcall = getLibcallImpl(RTLIB::STACK_PROBE);
+ if (ChkStkLibcall == RTLIB::Unsupported)
+ reportFatalUsageError("no available implementation of __chkstk");
+
+ const char *ChkStk = getLibcallImplName(ChkStkLibcall).data();
switch (TM.getCodeModel()) {
case CodeModel::Tiny:
llvm_unreachable("Tiny code model not available on ARM.");
@@ -11735,7 +11740,7 @@ ARMTargetLowering::EmitLowered__chkstk(MachineInstr &MI,
case CodeModel::Kernel:
BuildMI(*MBB, MI, DL, TII.get(ARM::tBL))
.add(predOps(ARMCC::AL))
- .addExternalSymbol("__chkstk")
+ .addExternalSymbol(ChkStk)
.addReg(ARM::R4, RegState::Implicit | RegState::Kill)
.addReg(ARM::R4, RegState::Implicit | RegState::Define)
.addReg(ARM::R12,
@@ -11748,7 +11753,7 @@ ARMTargetLowering::EmitLowered__chkstk(MachineInstr &MI,
Register Reg = MRI.createVirtualRegister(&ARM::rGPRRegClass);
BuildMI(*MBB, MI, DL, TII.get(ARM::t2MOVi32imm), Reg)
- .addExternalSymbol("__chkstk");
+ .addExternalSymbol(ChkStk);
BuildMI(*MBB, MI, DL, TII.get(gettBLXrOpcode(*MBB->getParent())))
.add(predOps(ARMCC::AL))
.addReg(Reg, RegState::Kill)
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 5bce539c45341..cd9e530284e08 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -62436,9 +62436,10 @@ X86TargetLowering::getStackProbeSymbolName(const MachineFunction &MF) const {
// We need a stack probe to conform to the Windows ABI. Choose the right
// symbol.
- if (Subtarget.is64Bit())
- return Subtarget.isTargetCygMing() ? "___chkstk_ms" : "__chkstk";
- return Subtarget.isTargetCygMing() ? "_alloca" : "_chkstk";
+ RTLIB::LibcallImpl StackProbeImpl = getLibcallImpl(RTLIB::STACK_PROBE);
+ if (StackProbeImpl == RTLIB::Unsupported)
+ return "";
+ return getLibcallImplName(StackProbeImpl);
}
unsigned
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compnerd
reviewed
Nov 11, 2025
Comment on lines
+1088
to
+1092
| def _chkstk : RuntimeLibcallImpl<STACK_PROBE>; | ||
| def _alloca : RuntimeLibcallImpl<STACK_PROBE>; | ||
|
|
||
| def __chkstk : RuntimeLibcallImpl<STACK_PROBE>; | ||
| def ___chkstk_ms : RuntimeLibcallImpl<STACK_PROBE>; |
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Can we merge __chkstk and _chkstk. They are not different names, they are the same name, the difference is __USER_LABEL_PREFIX__.
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I assume the same applies for ___chkstk_ms and __chkstk_ms?
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If I try to use getNameWithPrefix or otherwise manually prepend getGlobalPrefix, it doesn't seem to be working out
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Stop hardcoding different variants of __chkstk and query the name through RuntimeLibcalls.
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Stop hardcoding different variants of __chkstk and query the
name through RuntimeLibcalls.