41 lines
1.4 KiB
LLVM
41 lines
1.4 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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%struct.foo = type { [16 x i8] }
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@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
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; struct { [16 x i8] }
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define void @foo(i8* %a) nounwind uwtable safestack {
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entry:
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; CHECK: %[[USP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr
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; CHECK: %[[USST:.*]] = getelementptr i8, i8* %[[USP]], i32 -16
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; CHECK: store i8* %[[USST]], i8** @__safestack_unsafe_stack_ptr
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%a.addr = alloca i8*, align 8
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%buf = alloca %struct.foo, align 1
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; CHECK: %[[AADDR:.*]] = alloca i8*, align 8
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; CHECK: store i8* {{.*}}, i8** %[[AADDR]], align 8
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store i8* %a, i8** %a.addr, align 8
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; CHECK: %[[BUFPTR:.*]] = getelementptr i8, i8* %[[USP]], i32 -16
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; CHECK: %[[BUFPTR2:.*]] = bitcast i8* %[[BUFPTR]] to %struct.foo*
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; CHECK: %[[GEP:.*]] = getelementptr inbounds %struct.foo, %struct.foo* %[[BUFPTR2]], i32 0, i32 0, i32 0
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%gep = getelementptr inbounds %struct.foo, %struct.foo* %buf, i32 0, i32 0, i32 0
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; CHECK: %[[A:.*]] = load i8*, i8** %[[AADDR]], align 8
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%a2 = load i8*, i8** %a.addr, align 8
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; CHECK: call i8* @strcpy(i8* %[[GEP]], i8* %[[A]])
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%call = call i8* @strcpy(i8* %gep, i8* %a2)
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; CHECK: store i8* %[[USP]], i8** @__safestack_unsafe_stack_ptr
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ret void
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}
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declare i8* @strcpy(i8*, i8*)
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