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59203823d7
The unsafe stack pointer is only popped in moveStaticAllocasToUnsafeStack so it won't happen if there are no static allocas. Fixes https://llvm.org/bugs/show_bug.cgi?id=26122 Differential Revision: http://reviews.llvm.org/D16339 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259447 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
1.1 KiB
LLVM
37 lines
1.1 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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@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 i8** @__safestack_pointer_address()
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; CHECK: %[[USP:.*]] = load i8*, i8** %[[SPA]]
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; CHECK: %[[USDP:.*]] = alloca i8*
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; CHECK: store i8* %[[USP]], i8** %[[USDP]]
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; CHECK: call i32 @setjmp
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%call = call i32 @setjmp(i32* getelementptr inbounds ([64 x i32], [64 x i32]* @env, i32 0, i32 0)) returns_twice
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; CHECK: %[[USP2:.*]] = load i8*, i8** %[[USDP]]
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; CHECK: store i8* %[[USP2]], i8** %[[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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%.sub = getelementptr inbounds [42 x i8], [42 x i8]* %0, i32 0, i32 0
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call void @_Z7CapturePv(i8* %.sub)
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br label %if.end
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if.end:
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; CHECK: store i8* %[[USP:.*]], i8** %[[SPA:.*]]
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ret void
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}
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declare i32 @setjmp(i32*) returns_twice
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declare void @_Z7CapturePv(i8*)
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