derek.holloway
7502bf64a4
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30 lines
1.6 KiB
LLVM
30 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -mtriple=x86_64-unknown-linux-gnu -passes='require<libcall-lowering-info>,stack-protector' < %s | FileCheck %s
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; RUN: opt -S -mtriple=x86_64-unknown-linux-gnu -passes='require<libcall-lowering-info>,function(require<domtree>,stack-protector)' < %s | FileCheck %s
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define void @atomicrmw_xchg(ptr %p) sspstrong {
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; CHECK-LABEL: define void @atomicrmw_xchg(
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; CHECK-SAME: ptr [[P:%.*]]) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: [[STACKGUARDSLOT:%.*]] = alloca ptr, align 8
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; CHECK-NEXT: [[STACKGUARD:%.*]] = load volatile ptr, ptr addrspace(257) inttoptr (i32 40 to ptr addrspace(257)), align 8
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; CHECK-NEXT: call void @llvm.stackprotector(ptr [[STACKGUARD]], ptr [[STACKGUARDSLOT]])
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; CHECK-NEXT: [[A:%.*]] = alloca i64, align 8
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; CHECK-NEXT: [[TMP1:%.*]] = atomicrmw xchg ptr [[P]], ptr [[A]] acquire, align 8
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; CHECK-NEXT: [[STACKGUARD1:%.*]] = load volatile ptr, ptr addrspace(257) inttoptr (i32 40 to ptr addrspace(257)), align 8
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; CHECK-NEXT: [[TMP2:%.*]] = load volatile ptr, ptr [[STACKGUARDSLOT]], align 8
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; CHECK-NEXT: [[TMP3:%.*]] = icmp eq ptr [[STACKGUARD1]], [[TMP2]]
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; CHECK-NEXT: br i1 [[TMP3]], label %[[SP_RETURN:.*]], label %[[CALLSTACKCHECKFAILBLK:.*]], !prof [[PROF0:![0-9]+]]
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; CHECK: [[SP_RETURN]]:
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; CHECK-NEXT: ret void
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; CHECK: [[CALLSTACKCHECKFAILBLK]]:
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; CHECK-NEXT: call void @__stack_chk_fail()
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; CHECK-NEXT: unreachable
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;
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%a = alloca i64
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atomicrmw xchg ptr %p, ptr %a acquire
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ret void
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}
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;.
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; CHECK: [[PROF0]] = !{!"branch_weights", i32 2147481600, i32 2048}
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;.
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