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llvm/test/Transforms/GlobalOpt/cleanup-pointer-root-users.ll

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Teach globalopt to not nuke all stores to globals. Keep them around of they might be deliberate "one time" leaks, so that leak checkers can find them. This is a reapply of r160602 with the fix that this time I'm committing the code I thought I was committing last time; the I->eraseFromParent() goes *after* the break out of the loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160664 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-24 07:21:08 +00:00
; RUN: opt -globalopt -S -o - < %s | FileCheck %s
Add testcases for GlobalOpt changes in r160693 and r160757. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160925 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-29 01:15:37 +00:00
@glbl = internal global i8* null
Teach globalopt to not nuke all stores to globals. Keep them around of they might be deliberate "one time" leaks, so that leak checkers can find them. This is a reapply of r160602 with the fix that this time I'm committing the code I thought I was committing last time; the I->eraseFromParent() goes *after* the break out of the loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160664 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-24 07:21:08 +00:00
define void @test1a() {
; CHECK: @test1a
; CHECK-NOT: store
; CHECK-NEXT: ret void
Add testcases for GlobalOpt changes in r160693 and r160757. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160925 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-29 01:15:37 +00:00
store i8* null, i8** @glbl
Teach globalopt to not nuke all stores to globals. Keep them around of they might be deliberate "one time" leaks, so that leak checkers can find them. This is a reapply of r160602 with the fix that this time I'm committing the code I thought I was committing last time; the I->eraseFromParent() goes *after* the break out of the loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160664 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-24 07:21:08 +00:00
ret void
}
define void @test1b(i8* %p) {
; CHECK: @test1b
; CHECK-NEXT: store
; CHECK-NEXT: ret void
Add testcases for GlobalOpt changes in r160693 and r160757. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160925 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-29 01:15:37 +00:00
store i8* %p, i8** @glbl
Teach globalopt to not nuke all stores to globals. Keep them around of they might be deliberate "one time" leaks, so that leak checkers can find them. This is a reapply of r160602 with the fix that this time I'm committing the code I thought I was committing last time; the I->eraseFromParent() goes *after* the break out of the loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160664 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-24 07:21:08 +00:00
ret void
}
Add testcases for GlobalOpt changes in r160693 and r160757. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160925 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-29 01:15:37 +00:00
define void @test2() {
; CHECK: @test2
; CHECK: alloca i8
%txt = alloca i8
call void @foo2(i8* %txt)
%call2 = call i8* @strdup(i8* %txt)
store i8* %call2, i8** @glbl
ret void
}
declare i8* @strdup(i8*)
declare void @foo2(i8*)
define void @test3() uwtable {
; CHECK: @test3
; CHECK-NOT: bb1:
; CHECK-NOT: bb2:
; CHECK: invoke
%ptr = invoke i8* @_Znwm(i64 1)
to label %bb1 unwind label %bb2
bb1:
store i8* %ptr, i8** @glbl
unreachable
bb2:
%tmp1 = landingpad { i8*, i32 } personality i32 (i32, i64, i8*, i8*)* @__gxx_personality_v0
cleanup
resume { i8*, i32 } %tmp1
}
declare i32 @__gxx_personality_v0(i32, i64, i8*, i8*)
declare i8* @_Znwm(i64)
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