derek.holloway
7502bf64a4
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37 lines
1.3 KiB
LLVM
37 lines
1.3 KiB
LLVM
; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
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; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s
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; RUN: opt -passes='require<libcall-lowering-info>,safe-stack' -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
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; RUN: opt -passes='require<libcall-lowering-info>,safe-stack' -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s
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@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
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; array of [16 x i8]
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define void @foo(ptr %a) nounwind uwtable safestack {
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entry:
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; CHECK: %[[USP:.*]] = load ptr, ptr @__safestack_unsafe_stack_ptr
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; CHECK: %[[USST:.*]] = getelementptr i8, ptr %[[USP]], i32 -16
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; CHECK: store ptr %[[USST]], ptr @__safestack_unsafe_stack_ptr
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%a.addr = alloca ptr, align 8
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%buf = alloca [16 x i8], align 16
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; CHECK: %[[AADDR:.*]] = alloca ptr, align 8
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; CHECK: store ptr {{.*}}, ptr %[[AADDR]], align 8
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store ptr %a, ptr %a.addr, align 8
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; CHECK: %[[A2:.*]] = load ptr, ptr %[[AADDR]], align 8
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; CHECK: %[[BUFPTR:.*]] = getelementptr i8, ptr %[[USP]], i32 -16
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%a2 = load ptr, ptr %a.addr, align 8
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; CHECK: call ptr @strcpy(ptr %[[BUFPTR]], ptr %[[A2]])
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%call = call ptr @strcpy(ptr %buf, ptr %a2)
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; CHECK: store ptr %[[USP]], ptr @__safestack_unsafe_stack_ptr
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ret void
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}
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declare ptr @strcpy(ptr, ptr)
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