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38 lines
1.5 KiB
LLVM
38 lines
1.5 KiB
LLVM
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; 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.__jmp_buf_tag = type { [8 x i64], i32, %struct.__sigset_t }
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%struct.__sigset_t = type { [16 x i64] }
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@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
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@buf = internal global [1 x %struct.__jmp_buf_tag] zeroinitializer, align 16
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; setjmp/longjmp test.
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; Requires protector.
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define i32 @foo() nounwind uwtable safestack {
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entry:
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; CHECK: %[[SP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr
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; CHECK: %[[STATICTOP:.*]] = getelementptr i8, i8* %[[SP]], i32 -16
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%retval = alloca i32, align 4
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%x = alloca i32, align 4
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store i32 0, i32* %retval
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store i32 42, i32* %x, align 4
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%call = call i32 @_setjmp(%struct.__jmp_buf_tag* getelementptr inbounds ([1 x %struct.__jmp_buf_tag], [1 x %struct.__jmp_buf_tag]* @buf, i32 0, i32 0)) returns_twice
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; CHECK: setjmp
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; CHECK-NEXT: store i8* %[[STATICTOP]], i8** @__safestack_unsafe_stack_ptr
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%tobool = icmp ne i32 %call, 0
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br i1 %tobool, label %if.else, label %if.then
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if.then: ; preds = %entry
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call void @funcall(i32* %x)
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br label %if.end
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if.else: ; preds = %entry
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call i32 (...) @dummy()
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret i32 0
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}
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declare i32 @_setjmp(%struct.__jmp_buf_tag*)
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declare void @funcall(i32*)
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declare i32 @dummy(...)
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