forked from OSchip/llvm-project
39 lines
718 B
LLVM
39 lines
718 B
LLVM
; RUN: opt -S -O2 -enable-gvn-hoist < %s | FileCheck %s
|
|
|
|
; Check that the inlined loads are hoisted.
|
|
; CHECK-LABEL: define i32 @fun(
|
|
; CHECK-LABEL: entry:
|
|
; CHECK: load i32, i32* @A
|
|
; CHECK: if.then:
|
|
|
|
@A = external global i32
|
|
@B = external global i32
|
|
@C = external global i32
|
|
|
|
define i32 @loadA() {
|
|
%a = load i32, i32* @A
|
|
ret i32 %a
|
|
}
|
|
|
|
define i32 @fun(i1 %c) {
|
|
entry:
|
|
br i1 %c, label %if.then, label %if.else
|
|
|
|
if.then:
|
|
store i32 1, i32* @B
|
|
%call1 = call i32 @loadA()
|
|
store i32 2, i32* @C
|
|
br label %if.endif
|
|
|
|
if.else:
|
|
store i32 2, i32* @C
|
|
%call2 = call i32 @loadA()
|
|
store i32 1, i32* @B
|
|
br label %if.endif
|
|
|
|
if.endif:
|
|
%ret = phi i32 [ %call1, %if.then ], [ %call2, %if.else ]
|
|
ret i32 %ret
|
|
}
|
|
|