| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals |
| ; RUN: opt < %s -passes=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: @[[G:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr global i32* null |
| ;. |
| define void @init() #0 { |
| ; CHECK-LABEL: @init( |
| ; CHECK-NEXT: [[MALLOCCALL:%.*]] = tail call i8* @malloc(i64 4) |
| ; CHECK-NEXT: [[P:%.*]] = bitcast i8* [[MALLOCCALL]] to i32* |
| ; CHECK-NEXT: store i32* [[P]], i32** @G, align 8 |
| ; CHECK-NEXT: [[GV:%.*]] = load i32*, i32** @G, align 8 |
| ; CHECK-NEXT: store i32 0, i32* [[GV]], align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| %malloccall = tail call i8* @malloc(i64 4) |
| %P = bitcast i8* %malloccall to i32* |
| store i32* %P, i32** @G |
| %GV = load i32*, i32** @G |
| store i32 0, i32* %GV |
| ret void |
| } |
| |
| declare noalias i8* @malloc(i64) |
| |
| define i32 @get() #0 { |
| ; CHECK-LABEL: @get( |
| ; CHECK-NEXT: [[GV:%.*]] = load i32*, i32** @G, align 8 |
| ; CHECK-NEXT: [[V:%.*]] = load i32, i32* [[GV]], align 4 |
| ; CHECK-NEXT: ret i32 [[V]] |
| ; |
| %GV = load i32*, i32** @G |
| %V = load i32, i32* %GV |
| ret i32 %V |
| } |
| |
| attributes #0 = { null_pointer_is_valid } |
| ;. |
| ; CHECK: attributes #[[ATTR0:[0-9]+]] = { null_pointer_is_valid } |
| ;. |