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llvm-mirror/test/Transforms/GlobalOpt/malloc-promote-1-no-null-opt.ll
Eric Christopher a62270de2c Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
2019-04-17 04:52:47 +00:00

32 lines
985 B
LLVM

; RUN: opt < %s -globalopt -S | FileCheck %s
target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
@G = internal global i32* null ; <i32**> [#uses=3]
; CHECK: global
define void @init() #0 {
; CHECK-LABEL: @init(
; CHECK: store
; CHECK: load
%malloccall = tail call i8* @malloc(i64 4) ; <i8*> [#uses=1]
%P = bitcast i8* %malloccall to i32* ; <i32*> [#uses=1]
store i32* %P, i32** @G
%GV = load i32*, i32** @G ; <i32*> [#uses=1]
store i32 0, i32* %GV
ret void
}
declare noalias i8* @malloc(i64)
define i32 @get() #0 {
; CHECK-LABEL: @get(
; CHECK: load i32*, i32** @G
; CHECK-NEXT: load i32, i32* %GV
%GV = load i32*, i32** @G ; <i32*> [#uses=1]
%V = load i32, i32* %GV ; <i32> [#uses=1]
ret i32 %V
; CHECK: ret i32 %V
}
attributes #0 = { "null-pointer-is-valid"="true" }