derek.holloway
7502bf64a4
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37 lines
1.0 KiB
LLVM
37 lines
1.0 KiB
LLVM
; Test stack pointer restore after setjmp() with the function-call safestack ABI.
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; RUN: opt -safe-stack -S -mtriple=arm-linux-androideabi < %s -o - | FileCheck %s
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; RUN: opt -passes='require<libcall-lowering-info>,safe-stack' -S -mtriple=arm-linux-androideabi < %s -o - | FileCheck %s
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@env = global [64 x i32] zeroinitializer, align 4
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define void @f(i32 %b) safestack {
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entry:
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; CHECK: %[[SPA:.*]] = call ptr @__safestack_pointer_address()
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; CHECK: %[[USP:.*]] = load ptr, ptr %[[SPA]]
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; CHECK: %[[USDP:.*]] = alloca ptr
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; CHECK: store ptr %[[USP]], ptr %[[USDP]]
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; CHECK: call i32 @setjmp
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%call = call i32 @setjmp(ptr @env) returns_twice
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; CHECK: %[[USP2:.*]] = load ptr, ptr %[[USDP]]
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; CHECK: store ptr %[[USP2]], ptr %[[SPA]]
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%tobool = icmp eq i32 %b, 0
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br i1 %tobool, label %if.end, label %if.then
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if.then:
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%0 = alloca [42 x i8], align 1
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call void @_Z7CapturePv(ptr %0)
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br label %if.end
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if.end:
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; CHECK: store ptr %[[USP:.*]], ptr %[[SPA:.*]]
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ret void
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}
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declare i32 @setjmp(ptr) returns_twice
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declare void @_Z7CapturePv(ptr)
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