36 lines
1.1 KiB
LLVM
36 lines
1.1 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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define void @f(i1 %d1, i1 %d2) safestack {
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entry:
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; CHECK-LABEL: define void @f(
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; CHECK: %[[USP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr
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; CHECK-NEXT: getelementptr i8, i8* %[[USP]], i32 -16
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; CHECK: br i1 %d1, label %[[BB0:.*]], label %[[BB1:.*]]
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%a = alloca i32, align 8
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%b = alloca i32, align 8
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br i1 %d1, label %bb0, label %bb1
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bb0:
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; CHECK: [[BB0]]:
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; CHECK: %[[Ai8:.*]] = getelementptr i8, i8* %unsafe_stack_ptr, i32
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; CHECK: %[[AUNSAFE:.*]] = bitcast i8* %[[Ai8]] to i32*
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; CHECK: br i1
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br i1 %d2, label %bb2, label %bb2
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bb1:
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; CHECK: [[BB1]]:
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; CHECK: %[[Bi8:.*]] = getelementptr i8, i8* %unsafe_stack_ptr, i32
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; CHECK: %[[BUNSAFE:.*]] = bitcast i8* %[[Bi8]] to i32*
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; CHECK: br label
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br label %bb2
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bb2:
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; CHECK: phi i32* [ %[[AUNSAFE]], %[[BB0]] ], [ %[[AUNSAFE]], %[[BB0]] ], [ %[[BUNSAFE]], %[[BB1]] ]
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%c = phi i32* [ %a, %bb0 ], [ %a, %bb0 ], [ %b, %bb1 ]
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call void @capture(i32* %c)
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ret void
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}
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declare void @capture(i32*)
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