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b310adabbe
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 llvm-svn: 259447
23 lines
767 B
LLVM
23 lines
767 B
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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@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
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; Variable sized alloca
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; safestack attribute
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; Requires protector.
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define void @foo(i32 %n) 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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%n.addr = alloca i32, align 4
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%a = alloca i32*, align 8
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store i32 %n, i32* %n.addr, align 4
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%0 = load i32, i32* %n.addr, align 4
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%conv = sext i32 %0 to i64
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%1 = alloca i8, i64 %conv
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%2 = bitcast i8* %1 to i32*
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store i32* %2, i32** %a, align 8
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; CHECK: store i8* %[[SP:.*]], i8** @__safestack_unsafe_stack_ptr
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ret void
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}
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