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[hwasan] Optimize outlined memaccess for fixed shadow on Aarch64 #88544

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Apr 24, 2024
Merged

[hwasan] Optimize outlined memaccess for fixed shadow on Aarch64 #88544

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dffd5aa
[hwasan] Optimize outlined memaccess for fixed shadow on Aarch64
thurstond Apr 23, 2024
874eee8
Update fixed-shadow.ll test; use 'Mapping.Offset != kDynamicShadowSen…
thurstond Apr 23, 2024
8cc781c
Fix formatting
thurstond Apr 23, 2024
5414ed1
Update two more existing tests
thurstond Apr 23, 2024
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32 changes: 27 additions & 5 deletions llvm/lib/Transforms/Instrumentation/HWAddressSanitizer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -930,11 +930,33 @@ void HWAddressSanitizer::instrumentMemAccessOutline(Value *Ptr, bool IsWrite,

IRBuilder<> IRB(InsertBefore);
Module *M = IRB.GetInsertBlock()->getParent()->getParent();
IRB.CreateCall(Intrinsic::getDeclaration(
M, UseShortGranules
? Intrinsic::hwasan_check_memaccess_shortgranules
: Intrinsic::hwasan_check_memaccess),
{ShadowBase, Ptr, ConstantInt::get(Int32Ty, AccessInfo)});
bool useFixedShadowIntrinsic = false;
// The memaccess fixed shadow intrinsic is only supported on AArch64,
// which allows a 16-bit immediate to be left-shifted by 32.
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// Since kShadowBaseAlignment == 32, and Linux by default will not
// mmap above 48-bits, practically any valid shadow offset is
// representable.
// In particular, an offset of 4TB (1024 << 32) is representable, and
// ought to be good enough for anybody.
if (TargetTriple.isAArch64() && Mapping.Offset != kDynamicShadowSentinel) {
uint16_t offset_shifted = Mapping.Offset >> 32;
useFixedShadowIntrinsic = (uint64_t)offset_shifted << 32 == Mapping.Offset;
}

if (useFixedShadowIntrinsic)
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IRB.CreateCall(
Intrinsic::getDeclaration(
M, UseShortGranules
? Intrinsic::hwasan_check_memaccess_shortgranules_fixedshadow
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: Intrinsic::hwasan_check_memaccess_fixedshadow),
{Ptr, ConstantInt::get(Int32Ty, AccessInfo),
ConstantInt::get(Int64Ty, Mapping.Offset)});
else
IRB.CreateCall(Intrinsic::getDeclaration(
M, UseShortGranules
? Intrinsic::hwasan_check_memaccess_shortgranules
: Intrinsic::hwasan_check_memaccess),
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{ShadowBase, Ptr, ConstantInt::get(Int32Ty, AccessInfo)});
}

void HWAddressSanitizer::instrumentMemAccessInline(Value *Ptr, bool IsWrite,
Expand Down
22 changes: 10 additions & 12 deletions llvm/test/Instrumentation/HWAddressSanitizer/basic.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -9,8 +9,6 @@
; RUN: opt < %s -passes=hwasan -hwasan-recover=0 -hwasan-mapping-offset=0 -S | FileCheck %s --check-prefixes=ABORT-ZERO-BASED-SHADOW
; RUN: opt < %s -passes=hwasan -hwasan-recover=1 -hwasan-mapping-offset=0 -S | FileCheck %s --check-prefixes=RECOVER-ZERO-BASED-SHADOW

; CHECK: @llvm.used = appending global [1 x ptr] [ptr @hwasan.module_ctor]
; CHECK: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @hwasan.module_ctor, ptr @hwasan.module_ctor }]

target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-android10000"
Expand Down Expand Up @@ -101,7 +99,7 @@ define i8 @test_load8(ptr %a) sanitize_hwaddress {
; ABORT-ZERO-BASED-SHADOW-SAME: (ptr [[A:%.*]]) #[[ATTR0:[0-9]+]] {
; ABORT-ZERO-BASED-SHADOW-NEXT: entry:
; ABORT-ZERO-BASED-SHADOW-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 0, i64 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: [[B:%.*]] = load i8, ptr [[A]], align 4
; ABORT-ZERO-BASED-SHADOW-NEXT: ret i8 [[B]]
;
Expand Down Expand Up @@ -233,7 +231,7 @@ define i16 @test_load16(ptr %a) sanitize_hwaddress {
; ABORT-ZERO-BASED-SHADOW-SAME: (ptr [[A:%.*]]) #[[ATTR0]] {
; ABORT-ZERO-BASED-SHADOW-NEXT: entry:
; ABORT-ZERO-BASED-SHADOW-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 1)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 1, i64 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: [[B:%.*]] = load i16, ptr [[A]], align 4
; ABORT-ZERO-BASED-SHADOW-NEXT: ret i16 [[B]]
;
Expand Down Expand Up @@ -365,7 +363,7 @@ define i32 @test_load32(ptr %a) sanitize_hwaddress {
; ABORT-ZERO-BASED-SHADOW-SAME: (ptr [[A:%.*]]) #[[ATTR0]] {
; ABORT-ZERO-BASED-SHADOW-NEXT: entry:
; ABORT-ZERO-BASED-SHADOW-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 2)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 2, i64 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: [[B:%.*]] = load i32, ptr [[A]], align 4
; ABORT-ZERO-BASED-SHADOW-NEXT: ret i32 [[B]]
;
Expand Down Expand Up @@ -497,7 +495,7 @@ define i64 @test_load64(ptr %a) sanitize_hwaddress {
; ABORT-ZERO-BASED-SHADOW-SAME: (ptr [[A:%.*]]) #[[ATTR0]] {
; ABORT-ZERO-BASED-SHADOW-NEXT: entry:
; ABORT-ZERO-BASED-SHADOW-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 3)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 3, i64 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: [[B:%.*]] = load i64, ptr [[A]], align 8
; ABORT-ZERO-BASED-SHADOW-NEXT: ret i64 [[B]]
;
Expand Down Expand Up @@ -629,7 +627,7 @@ define i128 @test_load128(ptr %a) sanitize_hwaddress {
; ABORT-ZERO-BASED-SHADOW-SAME: (ptr [[A:%.*]]) #[[ATTR0]] {
; ABORT-ZERO-BASED-SHADOW-NEXT: entry:
; ABORT-ZERO-BASED-SHADOW-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 4)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 4, i64 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: [[B:%.*]] = load i128, ptr [[A]], align 16
; ABORT-ZERO-BASED-SHADOW-NEXT: ret i128 [[B]]
;
Expand Down Expand Up @@ -830,7 +828,7 @@ define void @test_store8(ptr %a, i8 %b) sanitize_hwaddress {
; ABORT-ZERO-BASED-SHADOW-SAME: (ptr [[A:%.*]], i8 [[B:%.*]]) #[[ATTR0]] {
; ABORT-ZERO-BASED-SHADOW-NEXT: entry:
; ABORT-ZERO-BASED-SHADOW-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 16)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 16, i64 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: store i8 [[B]], ptr [[A]], align 4
; ABORT-ZERO-BASED-SHADOW-NEXT: ret void
;
Expand Down Expand Up @@ -962,7 +960,7 @@ define void @test_store16(ptr %a, i16 %b) sanitize_hwaddress {
; ABORT-ZERO-BASED-SHADOW-SAME: (ptr [[A:%.*]], i16 [[B:%.*]]) #[[ATTR0]] {
; ABORT-ZERO-BASED-SHADOW-NEXT: entry:
; ABORT-ZERO-BASED-SHADOW-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 17)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 17, i64 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: store i16 [[B]], ptr [[A]], align 4
; ABORT-ZERO-BASED-SHADOW-NEXT: ret void
;
Expand Down Expand Up @@ -1094,7 +1092,7 @@ define void @test_store32(ptr %a, i32 %b) sanitize_hwaddress {
; ABORT-ZERO-BASED-SHADOW-SAME: (ptr [[A:%.*]], i32 [[B:%.*]]) #[[ATTR0]] {
; ABORT-ZERO-BASED-SHADOW-NEXT: entry:
; ABORT-ZERO-BASED-SHADOW-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 18)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 18, i64 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: store i32 [[B]], ptr [[A]], align 4
; ABORT-ZERO-BASED-SHADOW-NEXT: ret void
;
Expand Down Expand Up @@ -1226,7 +1224,7 @@ define void @test_store64(ptr %a, i64 %b) sanitize_hwaddress {
; ABORT-ZERO-BASED-SHADOW-SAME: (ptr [[A:%.*]], i64 [[B:%.*]]) #[[ATTR0]] {
; ABORT-ZERO-BASED-SHADOW-NEXT: entry:
; ABORT-ZERO-BASED-SHADOW-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 19)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 19, i64 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: store i64 [[B]], ptr [[A]], align 8
; ABORT-ZERO-BASED-SHADOW-NEXT: ret void
;
Expand Down Expand Up @@ -1358,7 +1356,7 @@ define void @test_store128(ptr %a, i128 %b) sanitize_hwaddress {
; ABORT-ZERO-BASED-SHADOW-SAME: (ptr [[A:%.*]], i128 [[B:%.*]]) #[[ATTR0]] {
; ABORT-ZERO-BASED-SHADOW-NEXT: entry:
; ABORT-ZERO-BASED-SHADOW-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 20)
; ABORT-ZERO-BASED-SHADOW-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 20, i64 0)
; ABORT-ZERO-BASED-SHADOW-NEXT: store i128 [[B]], ptr [[A]], align 16
; ABORT-ZERO-BASED-SHADOW-NEXT: ret void
;
Expand Down
20 changes: 10 additions & 10 deletions llvm/test/Instrumentation/HWAddressSanitizer/fixed-shadow.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ define i8 @test_load8(ptr %a) sanitize_hwaddress {
; CHECK-SAME: (ptr [[A:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 4398046511104 to ptr))
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 0)
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 0, i64 4398046511104)
; CHECK-NEXT: [[B:%.*]] = load i8, ptr [[A]], align 4
; CHECK-NEXT: ret i8 [[B]]
;
Expand All @@ -26,7 +26,7 @@ define i16 @test_load16(ptr %a) sanitize_hwaddress {
; CHECK-SAME: (ptr [[A:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 4398046511104 to ptr))
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 1)
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 1, i64 4398046511104)
; CHECK-NEXT: [[B:%.*]] = load i16, ptr [[A]], align 4
; CHECK-NEXT: ret i16 [[B]]
;
Expand All @@ -40,7 +40,7 @@ define i32 @test_load32(ptr %a) sanitize_hwaddress {
; CHECK-SAME: (ptr [[A:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 4398046511104 to ptr))
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 2)
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 2, i64 4398046511104)
; CHECK-NEXT: [[B:%.*]] = load i32, ptr [[A]], align 4
; CHECK-NEXT: ret i32 [[B]]
;
Expand All @@ -54,7 +54,7 @@ define i64 @test_load64(ptr %a) sanitize_hwaddress {
; CHECK-SAME: (ptr [[A:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 4398046511104 to ptr))
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 3)
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 3, i64 4398046511104)
; CHECK-NEXT: [[B:%.*]] = load i64, ptr [[A]], align 8
; CHECK-NEXT: ret i64 [[B]]
;
Expand All @@ -68,7 +68,7 @@ define i128 @test_load128(ptr %a) sanitize_hwaddress {
; CHECK-SAME: (ptr [[A:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 4398046511104 to ptr))
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 4)
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 4, i64 4398046511104)
; CHECK-NEXT: [[B:%.*]] = load i128, ptr [[A]], align 16
; CHECK-NEXT: ret i128 [[B]]
;
Expand Down Expand Up @@ -97,7 +97,7 @@ define void @test_store8(ptr %a, i8 %b) sanitize_hwaddress {
; CHECK-SAME: (ptr [[A:%.*]], i8 [[B:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 4398046511104 to ptr))
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 16)
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 16, i64 4398046511104)
; CHECK-NEXT: store i8 [[B]], ptr [[A]], align 4
; CHECK-NEXT: ret void
;
Expand All @@ -111,7 +111,7 @@ define void @test_store16(ptr %a, i16 %b) sanitize_hwaddress {
; CHECK-SAME: (ptr [[A:%.*]], i16 [[B:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 4398046511104 to ptr))
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 17)
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 17, i64 4398046511104)
; CHECK-NEXT: store i16 [[B]], ptr [[A]], align 4
; CHECK-NEXT: ret void
;
Expand All @@ -125,7 +125,7 @@ define void @test_store32(ptr %a, i32 %b) sanitize_hwaddress {
; CHECK-SAME: (ptr [[A:%.*]], i32 [[B:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 4398046511104 to ptr))
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 18)
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 18, i64 4398046511104)
; CHECK-NEXT: store i32 [[B]], ptr [[A]], align 4
; CHECK-NEXT: ret void
;
Expand All @@ -139,7 +139,7 @@ define void @test_store64(ptr %a, i64 %b) sanitize_hwaddress {
; CHECK-SAME: (ptr [[A:%.*]], i64 [[B:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 4398046511104 to ptr))
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 19)
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 19, i64 4398046511104)
; CHECK-NEXT: store i64 [[B]], ptr [[A]], align 8
; CHECK-NEXT: ret void
;
Expand All @@ -153,7 +153,7 @@ define void @test_store128(ptr %a, i128 %b) sanitize_hwaddress {
; CHECK-SAME: (ptr [[A:%.*]], i128 [[B:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 4398046511104 to ptr))
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 20)
; CHECK-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 20, i64 4398046511104)
; CHECK-NEXT: store i128 [[B]], ptr [[A]], align 16
; CHECK-NEXT: ret void
;
Expand Down
4 changes: 2 additions & 2 deletions llvm/test/Instrumentation/HWAddressSanitizer/prologue.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -69,15 +69,15 @@ define i32 @test_load(ptr %a) sanitize_hwaddress {
; FUCHSIA-SAME: (ptr [[A:%.*]]) #[[ATTR0:[0-9]+]] {
; FUCHSIA-NEXT: entry:
; FUCHSIA-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; FUCHSIA-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 2)
; FUCHSIA-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 2, i64 0)
; FUCHSIA-NEXT: [[X:%.*]] = load i32, ptr [[A]], align 4
; FUCHSIA-NEXT: ret i32 [[X]]
;
; FUCHSIA-LIBCALL-LABEL: define i32 @test_load
; FUCHSIA-LIBCALL-SAME: (ptr [[A:%.*]]) #[[ATTR0:[0-9]+]] {
; FUCHSIA-LIBCALL-NEXT: entry:
; FUCHSIA-LIBCALL-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
; FUCHSIA-LIBCALL-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[DOTHWASAN_SHADOW]], ptr [[A]], i32 2)
; FUCHSIA-LIBCALL-NEXT: call void @llvm.hwasan.check.memaccess.shortgranules.fixedshadow(ptr [[A]], i32 2, i64 0)
; FUCHSIA-LIBCALL-NEXT: [[X:%.*]] = load i32, ptr [[A]], align 4
; FUCHSIA-LIBCALL-NEXT: ret i32 [[X]]
;
Expand Down
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