[X86][GlobalIsel] Support G_INTRINSIC_TRUNC/G_FCEIL/G_FFLOOR #156633
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llvm/test/CodeGen/X86/isel-ceil.ll
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| ; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86,DAG-X86 | ||
| ; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86,FASTISEL-X86 | ||
| ; RUN: llc < %s -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=GISEL-X64 | ||
| ; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=X86,GISEL-X86 |
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Suggested change
| ; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=X86,GISEL-X86 | |
| ; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=GISEL-X86 |
llvm/test/CodeGen/X86/isel-floor.ll
Outdated
| ; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86,DAG-X86 | ||
| ; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86,FASTISEL-X86 | ||
| ; RUN: llc < %s -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=GISEL-X64 | ||
| ; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=X86,GISEL-X86 |
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| ; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=X86,GISEL-X86 | |
| ; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=GISEL-X86 |
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It should allow to keep fast-isel and sdag under the same check unchanged but then it will introduce a copy for fp80. So it is about have 2 copies (for float and double) vs one copy for (fp80)
| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5 | ||
| ; RUN: llc < %s -mtriple=x86_64-linux-gnu | FileCheck %s --check-prefixes=X64,DAG-X64 | ||
| ; RUN: llc < %s -mtriple=x86_64-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X64,FASTISEL-X64 | ||
| ; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86 |
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Suggested change
| ; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86 | |
| ; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86,DAG-X86 |
| ; RUN: llc < %s -mtriple=x86_64-linux-gnu | FileCheck %s --check-prefixes=X64,DAG-X64 | ||
| ; RUN: llc < %s -mtriple=x86_64-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X64,FASTISEL-X64 | ||
| ; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86 | ||
| ; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86 |
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Suggested change
| ; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86 | |
| ; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86,FASTISEL-X86 |
|
@llvm/pr-subscribers-backend-x86 Author: Mahesh-Attarde (mahesh-attarde) ChangesThis PR adds support for C/CPP Lib Intrinsic G_INTRINSIC_TRUNC/G_FCEIL/G_FFLOOR from LangRef in GlobalIsel. Full diff: https://github.com/llvm/llvm-project/pull/156633.diff 4 Files Affected:
diff --git a/llvm/lib/Target/X86/GISel/X86LegalizerInfo.cpp b/llvm/lib/Target/X86/GISel/X86LegalizerInfo.cpp
index 7fe58539cd4ec..c27e6075c779f 100644
--- a/llvm/lib/Target/X86/GISel/X86LegalizerInfo.cpp
+++ b/llvm/lib/Target/X86/GISel/X86LegalizerInfo.cpp
@@ -580,7 +580,8 @@ X86LegalizerInfo::X86LegalizerInfo(const X86Subtarget &STI,
.lower();
// fp intrinsics
- getActionDefinitionsBuilder(G_INTRINSIC_ROUNDEVEN)
+ getActionDefinitionsBuilder(
+ {G_INTRINSIC_ROUNDEVEN, G_INTRINSIC_TRUNC, G_FCEIL, G_FFLOOR})
.scalarize(0)
.minScalar(0, LLT::scalar(32))
.libcall();
diff --git a/llvm/test/CodeGen/X86/isel-ceil.ll b/llvm/test/CodeGen/X86/isel-ceil.ll
index c82cfebd4814d..831da72a0aa96 100644
--- a/llvm/test/CodeGen/X86/isel-ceil.ll
+++ b/llvm/test/CodeGen/X86/isel-ceil.ll
@@ -1,10 +1,10 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc < %s -mtriple=x86_64-linux-gnu | FileCheck %s --check-prefixes=X64,DAG-X64
; RUN: llc < %s -mtriple=x86_64-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X64,FASTISEL-X64
-; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86
-; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86
-; RUN: llc < %s -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=2 | FileCheck %s --check-prefixes=GISEL-X64
-; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=2 | FileCheck %s --check-prefixes=X86
+; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86,DAG-X86
+; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86,FASTISEL-X86
+; RUN: llc < %s -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=GISEL-X64
+; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=X86,GISEL-X86
define float @ceil_f32(float %a) nounwind readnone {
; DAG-X64-LABEL: ceil_f32:
@@ -18,18 +18,39 @@ define float @ceil_f32(float %a) nounwind readnone {
; FASTISEL-X64-NEXT: popq %rax
; FASTISEL-X64-NEXT: retq
;
-; X86-LABEL: ceil_f32:
-; X86: # %bb.0:
-; X86-NEXT: subl $12, %esp
-; X86-NEXT: flds {{[0-9]+}}(%esp)
-; X86-NEXT: fstps (%esp)
-; X86-NEXT: calll ceilf
-; X86-NEXT: addl $12, %esp
-; X86-NEXT: retl
+; DAG-X86-LABEL: ceil_f32:
+; DAG-X86: # %bb.0:
+; DAG-X86-NEXT: subl $12, %esp
+; DAG-X86-NEXT: flds {{[0-9]+}}(%esp)
+; DAG-X86-NEXT: fstps (%esp)
+; DAG-X86-NEXT: calll ceilf
+; DAG-X86-NEXT: addl $12, %esp
+; DAG-X86-NEXT: retl
+;
+; FASTISEL-X86-LABEL: ceil_f32:
+; FASTISEL-X86: # %bb.0:
+; FASTISEL-X86-NEXT: subl $12, %esp
+; FASTISEL-X86-NEXT: flds {{[0-9]+}}(%esp)
+; FASTISEL-X86-NEXT: fstps (%esp)
+; FASTISEL-X86-NEXT: calll ceilf
+; FASTISEL-X86-NEXT: addl $12, %esp
+; FASTISEL-X86-NEXT: retl
;
; GISEL-X64-LABEL: ceil_f32:
; GISEL-X64: # %bb.0:
-; GISEL-X64-NEXT: jmp ceilf@PLT # TAILCALL
+; GISEL-X64-NEXT: pushq %rax
+; GISEL-X64-NEXT: callq ceilf
+; GISEL-X64-NEXT: popq %rax
+; GISEL-X64-NEXT: retq
+;
+; GISEL-X86-LABEL: ceil_f32:
+; GISEL-X86: # %bb.0:
+; GISEL-X86-NEXT: subl $12, %esp
+; GISEL-X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; GISEL-X86-NEXT: movl %eax, (%esp)
+; GISEL-X86-NEXT: calll ceilf
+; GISEL-X86-NEXT: addl $12, %esp
+; GISEL-X86-NEXT: retl
%c = call float @llvm.ceil.f32(float %a)
ret float %c
}
@@ -46,18 +67,44 @@ define double @ceil_f64(double %a) nounwind readnone {
; FASTISEL-X64-NEXT: popq %rax
; FASTISEL-X64-NEXT: retq
;
-; X86-LABEL: ceil_f64:
-; X86: # %bb.0:
-; X86-NEXT: subl $12, %esp
-; X86-NEXT: fldl {{[0-9]+}}(%esp)
-; X86-NEXT: fstpl (%esp)
-; X86-NEXT: calll ceil
-; X86-NEXT: addl $12, %esp
-; X86-NEXT: retl
+; DAG-X86-LABEL: ceil_f64:
+; DAG-X86: # %bb.0:
+; DAG-X86-NEXT: subl $12, %esp
+; DAG-X86-NEXT: fldl {{[0-9]+}}(%esp)
+; DAG-X86-NEXT: fstpl (%esp)
+; DAG-X86-NEXT: calll ceil
+; DAG-X86-NEXT: addl $12, %esp
+; DAG-X86-NEXT: retl
+;
+; FASTISEL-X86-LABEL: ceil_f64:
+; FASTISEL-X86: # %bb.0:
+; FASTISEL-X86-NEXT: subl $12, %esp
+; FASTISEL-X86-NEXT: fldl {{[0-9]+}}(%esp)
+; FASTISEL-X86-NEXT: fstpl (%esp)
+; FASTISEL-X86-NEXT: calll ceil
+; FASTISEL-X86-NEXT: addl $12, %esp
+; FASTISEL-X86-NEXT: retl
;
; GISEL-X64-LABEL: ceil_f64:
; GISEL-X64: # %bb.0:
-; GISEL-X64-NEXT: jmp ceil@PLT # TAILCALL
+; GISEL-X64-NEXT: pushq %rax
+; GISEL-X64-NEXT: callq ceil
+; GISEL-X64-NEXT: popq %rax
+; GISEL-X64-NEXT: retq
+;
+; GISEL-X86-LABEL: ceil_f64:
+; GISEL-X86: # %bb.0:
+; GISEL-X86-NEXT: subl $12, %esp
+; GISEL-X86-NEXT: leal {{[0-9]+}}(%esp), %eax
+; GISEL-X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; GISEL-X86-NEXT: movl 4(%eax), %eax
+; GISEL-X86-NEXT: xorl %edx, %edx
+; GISEL-X86-NEXT: addl %esp, %edx
+; GISEL-X86-NEXT: movl %ecx, (%esp)
+; GISEL-X86-NEXT: movl %eax, 4(%edx)
+; GISEL-X86-NEXT: calll ceil
+; GISEL-X86-NEXT: addl $12, %esp
+; GISEL-X86-NEXT: retl
%c = call double @llvm.ceil.f64(double %a)
ret double %c
}
@@ -86,7 +133,7 @@ define x86_fp80 @ceil_f80(x86_fp80 %a) nounwind readnone {
; GISEL-X64-NEXT: subq $24, %rsp
; GISEL-X64-NEXT: fldt {{[0-9]+}}(%rsp)
; GISEL-X64-NEXT: fstpt (%rsp)
-; GISEL-X64-NEXT: callq ceill@PLT
+; GISEL-X64-NEXT: callq ceill
; GISEL-X64-NEXT: addq $24, %rsp
; GISEL-X64-NEXT: retq
%c = call x86_fp80 @llvm.ceil.f80(x86_fp80 %a)
diff --git a/llvm/test/CodeGen/X86/isel-floor.ll b/llvm/test/CodeGen/X86/isel-floor.ll
index 675925b611263..acd47cb7d5b86 100644
--- a/llvm/test/CodeGen/X86/isel-floor.ll
+++ b/llvm/test/CodeGen/X86/isel-floor.ll
@@ -1,10 +1,10 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc < %s -mtriple=x86_64-linux-gnu | FileCheck %s --check-prefixes=X64,DAG-X64
; RUN: llc < %s -mtriple=x86_64-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X64,FASTISEL-X64
-; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86
-; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86
-; RUN: llc < %s -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=2 | FileCheck %s --check-prefixes=GISEL-X64
-; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=2 | FileCheck %s --check-prefixes=X86
+; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86,DAG-X86
+; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86,FASTISEL-X86
+; RUN: llc < %s -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=GISEL-X64
+; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=X86,GISEL-X86
define float @floor_f32(float %a) nounwind readnone {
; DAG-X64-LABEL: floor_f32:
@@ -18,18 +18,39 @@ define float @floor_f32(float %a) nounwind readnone {
; FASTISEL-X64-NEXT: popq %rax
; FASTISEL-X64-NEXT: retq
;
-; X86-LABEL: floor_f32:
-; X86: # %bb.0:
-; X86-NEXT: subl $12, %esp
-; X86-NEXT: flds {{[0-9]+}}(%esp)
-; X86-NEXT: fstps (%esp)
-; X86-NEXT: calll floorf
-; X86-NEXT: addl $12, %esp
-; X86-NEXT: retl
+; DAG-X86-LABEL: floor_f32:
+; DAG-X86: # %bb.0:
+; DAG-X86-NEXT: subl $12, %esp
+; DAG-X86-NEXT: flds {{[0-9]+}}(%esp)
+; DAG-X86-NEXT: fstps (%esp)
+; DAG-X86-NEXT: calll floorf
+; DAG-X86-NEXT: addl $12, %esp
+; DAG-X86-NEXT: retl
+;
+; FASTISEL-X86-LABEL: floor_f32:
+; FASTISEL-X86: # %bb.0:
+; FASTISEL-X86-NEXT: subl $12, %esp
+; FASTISEL-X86-NEXT: flds {{[0-9]+}}(%esp)
+; FASTISEL-X86-NEXT: fstps (%esp)
+; FASTISEL-X86-NEXT: calll floorf
+; FASTISEL-X86-NEXT: addl $12, %esp
+; FASTISEL-X86-NEXT: retl
;
; GISEL-X64-LABEL: floor_f32:
; GISEL-X64: # %bb.0:
-; GISEL-X64-NEXT: jmp floorf@PLT # TAILCALL
+; GISEL-X64-NEXT: pushq %rax
+; GISEL-X64-NEXT: callq floorf
+; GISEL-X64-NEXT: popq %rax
+; GISEL-X64-NEXT: retq
+;
+; GISEL-X86-LABEL: floor_f32:
+; GISEL-X86: # %bb.0:
+; GISEL-X86-NEXT: subl $12, %esp
+; GISEL-X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; GISEL-X86-NEXT: movl %eax, (%esp)
+; GISEL-X86-NEXT: calll floorf
+; GISEL-X86-NEXT: addl $12, %esp
+; GISEL-X86-NEXT: retl
%c = call float @llvm.floor.f32(float %a)
ret float %c
}
@@ -46,18 +67,44 @@ define double @floor_f64(double %a) nounwind readnone {
; FASTISEL-X64-NEXT: popq %rax
; FASTISEL-X64-NEXT: retq
;
-; X86-LABEL: floor_f64:
-; X86: # %bb.0:
-; X86-NEXT: subl $12, %esp
-; X86-NEXT: fldl {{[0-9]+}}(%esp)
-; X86-NEXT: fstpl (%esp)
-; X86-NEXT: calll floor
-; X86-NEXT: addl $12, %esp
-; X86-NEXT: retl
+; DAG-X86-LABEL: floor_f64:
+; DAG-X86: # %bb.0:
+; DAG-X86-NEXT: subl $12, %esp
+; DAG-X86-NEXT: fldl {{[0-9]+}}(%esp)
+; DAG-X86-NEXT: fstpl (%esp)
+; DAG-X86-NEXT: calll floor
+; DAG-X86-NEXT: addl $12, %esp
+; DAG-X86-NEXT: retl
+;
+; FASTISEL-X86-LABEL: floor_f64:
+; FASTISEL-X86: # %bb.0:
+; FASTISEL-X86-NEXT: subl $12, %esp
+; FASTISEL-X86-NEXT: fldl {{[0-9]+}}(%esp)
+; FASTISEL-X86-NEXT: fstpl (%esp)
+; FASTISEL-X86-NEXT: calll floor
+; FASTISEL-X86-NEXT: addl $12, %esp
+; FASTISEL-X86-NEXT: retl
;
; GISEL-X64-LABEL: floor_f64:
; GISEL-X64: # %bb.0:
-; GISEL-X64-NEXT: jmp floor@PLT # TAILCALL
+; GISEL-X64-NEXT: pushq %rax
+; GISEL-X64-NEXT: callq floor
+; GISEL-X64-NEXT: popq %rax
+; GISEL-X64-NEXT: retq
+;
+; GISEL-X86-LABEL: floor_f64:
+; GISEL-X86: # %bb.0:
+; GISEL-X86-NEXT: subl $12, %esp
+; GISEL-X86-NEXT: leal {{[0-9]+}}(%esp), %eax
+; GISEL-X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; GISEL-X86-NEXT: movl 4(%eax), %eax
+; GISEL-X86-NEXT: xorl %edx, %edx
+; GISEL-X86-NEXT: addl %esp, %edx
+; GISEL-X86-NEXT: movl %ecx, (%esp)
+; GISEL-X86-NEXT: movl %eax, 4(%edx)
+; GISEL-X86-NEXT: calll floor
+; GISEL-X86-NEXT: addl $12, %esp
+; GISEL-X86-NEXT: retl
%c = call double @llvm.floor.f64(double %a)
ret double %c
}
@@ -86,10 +133,9 @@ define x86_fp80 @floor_f80(x86_fp80 %a) nounwind readnone {
; GISEL-X64-NEXT: subq $24, %rsp
; GISEL-X64-NEXT: fldt {{[0-9]+}}(%rsp)
; GISEL-X64-NEXT: fstpt (%rsp)
-; GISEL-X64-NEXT: callq floorl@PLT
+; GISEL-X64-NEXT: callq floorl
; GISEL-X64-NEXT: addq $24, %rsp
; GISEL-X64-NEXT: retq
%c = call x86_fp80 @llvm.floor.f80(x86_fp80 %a)
ret x86_fp80 %c
}
-
diff --git a/llvm/test/CodeGen/X86/isel-ftrunc.ll b/llvm/test/CodeGen/X86/isel-ftrunc.ll
index 9bf06193961a3..797aef02a4939 100644
--- a/llvm/test/CodeGen/X86/isel-ftrunc.ll
+++ b/llvm/test/CodeGen/X86/isel-ftrunc.ll
@@ -1,10 +1,10 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc < %s -mtriple=x86_64-linux-gnu | FileCheck %s --check-prefixes=X64,DAG-X64
; RUN: llc < %s -mtriple=x86_64-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X64,FASTISEL-X64
-; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86
-; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86
-; RUN: llc < %s -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=2 | FileCheck %s --check-prefixes=GISEL-X64
-; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=2 | FileCheck %s --check-prefixes=X86
+; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86,DAG-X86
+; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86,FASTISEL-X86
+; RUN: llc < %s -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=GISEL-X64
+; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=X86,GISEL-X86
define float @trunc_f32(float %a) nounwind readnone {
; DAG-X64-LABEL: trunc_f32:
@@ -18,18 +18,39 @@ define float @trunc_f32(float %a) nounwind readnone {
; FASTISEL-X64-NEXT: popq %rax
; FASTISEL-X64-NEXT: retq
;
-; X86-LABEL: trunc_f32:
-; X86: # %bb.0:
-; X86-NEXT: subl $12, %esp
-; X86-NEXT: flds {{[0-9]+}}(%esp)
-; X86-NEXT: fstps (%esp)
-; X86-NEXT: calll truncf
-; X86-NEXT: addl $12, %esp
-; X86-NEXT: retl
+; DAG-X86-LABEL: trunc_f32:
+; DAG-X86: # %bb.0:
+; DAG-X86-NEXT: subl $12, %esp
+; DAG-X86-NEXT: flds {{[0-9]+}}(%esp)
+; DAG-X86-NEXT: fstps (%esp)
+; DAG-X86-NEXT: calll truncf
+; DAG-X86-NEXT: addl $12, %esp
+; DAG-X86-NEXT: retl
+;
+; FASTISEL-X86-LABEL: trunc_f32:
+; FASTISEL-X86: # %bb.0:
+; FASTISEL-X86-NEXT: subl $12, %esp
+; FASTISEL-X86-NEXT: flds {{[0-9]+}}(%esp)
+; FASTISEL-X86-NEXT: fstps (%esp)
+; FASTISEL-X86-NEXT: calll truncf
+; FASTISEL-X86-NEXT: addl $12, %esp
+; FASTISEL-X86-NEXT: retl
;
; GISEL-X64-LABEL: trunc_f32:
; GISEL-X64: # %bb.0:
-; GISEL-X64-NEXT: jmp truncf@PLT # TAILCALL
+; GISEL-X64-NEXT: pushq %rax
+; GISEL-X64-NEXT: callq truncf
+; GISEL-X64-NEXT: popq %rax
+; GISEL-X64-NEXT: retq
+;
+; GISEL-X86-LABEL: trunc_f32:
+; GISEL-X86: # %bb.0:
+; GISEL-X86-NEXT: subl $12, %esp
+; GISEL-X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; GISEL-X86-NEXT: movl %eax, (%esp)
+; GISEL-X86-NEXT: calll truncf
+; GISEL-X86-NEXT: addl $12, %esp
+; GISEL-X86-NEXT: retl
%c = call float @llvm.trunc.f32(float %a)
ret float %c
}
@@ -46,18 +67,44 @@ define double @trunc_f64(double %a) nounwind readnone {
; FASTISEL-X64-NEXT: popq %rax
; FASTISEL-X64-NEXT: retq
;
-; X86-LABEL: trunc_f64:
-; X86: # %bb.0:
-; X86-NEXT: subl $12, %esp
-; X86-NEXT: fldl {{[0-9]+}}(%esp)
-; X86-NEXT: fstpl (%esp)
-; X86-NEXT: calll trunc
-; X86-NEXT: addl $12, %esp
-; X86-NEXT: retl
+; DAG-X86-LABEL: trunc_f64:
+; DAG-X86: # %bb.0:
+; DAG-X86-NEXT: subl $12, %esp
+; DAG-X86-NEXT: fldl {{[0-9]+}}(%esp)
+; DAG-X86-NEXT: fstpl (%esp)
+; DAG-X86-NEXT: calll trunc
+; DAG-X86-NEXT: addl $12, %esp
+; DAG-X86-NEXT: retl
+;
+; FASTISEL-X86-LABEL: trunc_f64:
+; FASTISEL-X86: # %bb.0:
+; FASTISEL-X86-NEXT: subl $12, %esp
+; FASTISEL-X86-NEXT: fldl {{[0-9]+}}(%esp)
+; FASTISEL-X86-NEXT: fstpl (%esp)
+; FASTISEL-X86-NEXT: calll trunc
+; FASTISEL-X86-NEXT: addl $12, %esp
+; FASTISEL-X86-NEXT: retl
;
; GISEL-X64-LABEL: trunc_f64:
; GISEL-X64: # %bb.0:
-; GISEL-X64-NEXT: jmp trunc@PLT # TAILCALL
+; GISEL-X64-NEXT: pushq %rax
+; GISEL-X64-NEXT: callq trunc
+; GISEL-X64-NEXT: popq %rax
+; GISEL-X64-NEXT: retq
+;
+; GISEL-X86-LABEL: trunc_f64:
+; GISEL-X86: # %bb.0:
+; GISEL-X86-NEXT: subl $12, %esp
+; GISEL-X86-NEXT: leal {{[0-9]+}}(%esp), %eax
+; GISEL-X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; GISEL-X86-NEXT: movl 4(%eax), %eax
+; GISEL-X86-NEXT: xorl %edx, %edx
+; GISEL-X86-NEXT: addl %esp, %edx
+; GISEL-X86-NEXT: movl %ecx, (%esp)
+; GISEL-X86-NEXT: movl %eax, 4(%edx)
+; GISEL-X86-NEXT: calll trunc
+; GISEL-X86-NEXT: addl $12, %esp
+; GISEL-X86-NEXT: retl
%c = call double @llvm.trunc.f64(double %a)
ret double %c
}
@@ -86,10 +133,9 @@ define x86_fp80 @trunc_f80(x86_fp80 %a) nounwind readnone {
; GISEL-X64-NEXT: subq $24, %rsp
; GISEL-X64-NEXT: fldt {{[0-9]+}}(%rsp)
; GISEL-X64-NEXT: fstpt (%rsp)
-; GISEL-X64-NEXT: callq truncl@PLT
+; GISEL-X64-NEXT: callq truncl
; GISEL-X64-NEXT: addq $24, %rsp
; GISEL-X64-NEXT: retq
%c = call x86_fp80 @llvm.trunc.f80(x86_fp80 %a)
ret x86_fp80 %c
}
-
|
e-kud
reviewed
Sep 3, 2025
llvm/test/CodeGen/X86/isel-floor.ll
Outdated
| ; RUN: llc < %s -mtriple=i686-linux-gnu | FileCheck %s --check-prefixes=X86,DAG-X86 | ||
| ; RUN: llc < %s -mtriple=i686-linux-gnu -fast-isel | FileCheck %s --check-prefixes=X86,FASTISEL-X86 | ||
| ; RUN: llc < %s -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=GISEL-X64 | ||
| ; RUN: llc < %s -mtriple=i686-linux-gnu -global-isel -global-isel-abort=1 | FileCheck %s --check-prefixes=X86,GISEL-X86 |
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It should allow to keep fast-isel and sdag under the same check unchanged but then it will introduce a copy for fp80. So it is about have 2 copies (for float and double) vs one copy for (fp80)
|
ping @RKSimon |
itzexpoexpo
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Sep 21, 2025
…6633) This PR adds support for C/CPP Lib Intrinsic G_INTRINSIC_TRUNC/G_FCEIL/G_FFLOOR from LangRef in GlobalIsel.
SeongjaeP
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that referenced
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Sep 23, 2025
…6633) This PR adds support for C/CPP Lib Intrinsic G_INTRINSIC_TRUNC/G_FCEIL/G_FFLOOR from LangRef in GlobalIsel.
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This PR adds support for C/CPP Lib Intrinsic G_INTRINSIC_TRUNC/G_FCEIL/G_FFLOOR from LangRef in GlobalIsel.