27 lines
576 B
LLVM
27 lines
576 B
LLVM
|
; RUN: llc --mtriple=powerpc64le-linux-gnu < %s | FileCheck %s
|
||
|
|
|
||
|
|
; It tests in function DAGCombiner::visitSIGN_EXTEND_INREG
|
||
|
|
; signext will not be combined with extload, and causes extra zext.
|
||
|
|
|
||
|
|
declare void @g(i32 signext)
|
||
|
|
|
||
|
|
define void @foo(i8* %p) {
|
||
|
|
entry:
|
||
|
|
br label %while.body
|
||
|
|
|
||
|
|
while.body:
|
||
|
|
%0 = load i8, i8* %p, align 1
|
||
|
|
%conv = zext i8 %0 to i32
|
||
|
|
%cmp = icmp sgt i8 %0, 0
|
||
|
|
br i1 %cmp, label %if.then, label %while.body
|
||
|
|
; CHECK: lbz
|
||
|
|
; CHECK: extsb.
|
||
|
|
; CHECK-NOT: rlwinm
|
||
|
|
; CHECK: ble
|
||
|
|
|
||
|
|
if.then:
|
||
|
|
tail call void @g(i32 signext %conv)
|
||
|
|
br label %while.body
|
||
|
|
}
|
||
|
|
|