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Imported Upstream version 5.18.0.205

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Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927
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Xamarin Public Jenkins (auto-signing)
2018-11-16 08:20:38 +00:00
parent 5cd5df71cc
commit 8e12397d70
28486 changed files with 3867013 additions and 66 deletions
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52
external/llvm/test/Transforms/GVNHoist/pr30216.ll vendored Normal file
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; RUN: opt -S -gvn-hoist < %s | FileCheck %s
; Make sure the two stores @B do not get hoisted past the load @B.
; CHECK-LABEL: define i8* @Foo
; CHECK: store
; CHECK: store
; CHECK: load
; CHECK: store
@A = external global i8
@B = external global i8*
define i8* @Foo() {
store i8 0, i8* @A
br i1 undef, label %if.then, label %if.else
if.then:
store i8* null, i8** @B
ret i8* null
if.else:
%1 = load i8*, i8** @B
store i8* null, i8** @B
ret i8* %1
}
; Make sure the two stores @B do not get hoisted past the store @GlobalVar.
; CHECK-LABEL: define i8* @Fun
; CHECK: store
; CHECK: store
; CHECK: store
; CHECK: store
; CHECK: load
@GlobalVar = internal global i8 0
define i8* @Fun() {
store i8 0, i8* @A
br i1 undef, label %if.then, label %if.else
if.then:
store i8* null, i8** @B
ret i8* null
if.else:
store i8 0, i8* @GlobalVar
store i8* null, i8** @B
%1 = load i8*, i8** @B
ret i8* %1
}