b07aab8fc1
If there are pre-existing dead instructions, the order we visit replaced values can cause us sometimes to not delete dead instructions. The added test non-deterministically failed without the change.
31 lines
724 B
LLVM
31 lines
724 B
LLVM
; RUN: opt -passes=globalopt -S < %s | FileCheck %s
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; CHECK-NOT: @global
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@global = internal global i8* null
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@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @zot, i8* null }]
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declare i8* @_Znwm(i64)
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define internal void @widget() {
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%tmp = tail call i8* @_Znwm(i64 0)
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%tmp2 = getelementptr inbounds i8, i8* %tmp, i64 0
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store i8* %tmp, i8** @global, align 8
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call void @baz(void ()* @spam)
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ret void
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}
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define internal void @spam() {
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%tmp = load i8*, i8** @global, align 8
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%tmp2 = getelementptr inbounds i8, i8* %tmp, i64 0
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ret void
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}
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define internal void @zot() {
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call void @baz(void ()* @widget)
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ret void
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}
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declare void @baz(void ()*)
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