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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -S -passes=gvn-hoist < %s | FileCheck %s
; Make sure the two stores @B do not get hoisted past the load @B.
@A = external global i8
@B = external global ptr
define ptr @Foo(i1 %arg) {
; CHECK-LABEL: define ptr @Foo(i1 %arg) {
; CHECK-NEXT: store i8 0, ptr @A, align 1
; CHECK-NEXT: br i1 %arg, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; CHECK: if.then:
; CHECK-NEXT: store ptr null, ptr @B, align 8
; CHECK-NEXT: ret ptr null
; CHECK: if.else:
; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr @B, align 8
; CHECK-NEXT: store ptr null, ptr @B, align 8
; CHECK-NEXT: ret ptr [[TMP1]]
;
store i8 0, ptr @A
br i1 %arg, label %if.then, label %if.else
if.then:
store ptr null, ptr @B
ret ptr null
if.else:
%1 = load ptr, ptr @B
store ptr null, ptr @B
ret ptr %1
}
; Make sure the two stores @B do not get hoisted past the store @GlobalVar.
@GlobalVar = internal global i8 0
define ptr @Fun(i1 %arg) {
; CHECK-LABEL: define ptr @Fun(i1 %arg) {
; CHECK-NEXT: store i8 0, ptr @A, align 1
; CHECK-NEXT: br i1 %arg, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; CHECK: if.then:
; CHECK-NEXT: store ptr null, ptr @B, align 8
; CHECK-NEXT: ret ptr null
; CHECK: if.else:
; CHECK-NEXT: store i8 0, ptr @GlobalVar, align 1
; CHECK-NEXT: store ptr null, ptr @B, align 8
; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr @B, align 8
; CHECK-NEXT: ret ptr [[TMP1]]
;
store i8 0, ptr @A
br i1 %arg, label %if.then, label %if.else
if.then:
store ptr null, ptr @B
ret ptr null
if.else:
store i8 0, ptr @GlobalVar
store ptr null, ptr @B
%1 = load ptr, ptr @B
ret ptr %1
}
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