File: selectiondag-sextload.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (26 lines) | stat: -rw-r--r-- 576 bytes parent folder | download | duplicates (15) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
; 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
}