File: vec_br_cmp.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (22 lines) | stat: -rw-r--r-- 853 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
 
; RUN: llc -verify-machineinstrs < %s -mtriple=ppc32-- -mcpu=g5 -o %t
; RUN: grep vcmpeqfp. %t
; RUN: not grep mfcr %t

; A predicate compare used immediately by a branch should not generate an mfcr.

define void @test(<4 x float>* %A, <4 x float>* %B) {
	%tmp = load <4 x float>, <4 x float>* %A		; <<4 x float>> [#uses=1]
	%tmp3 = load <4 x float>, <4 x float>* %B		; <<4 x float>> [#uses=1]
	%tmp.upgrd.1 = tail call i32 @llvm.ppc.altivec.vcmpeqfp.p( i32 1, <4 x float> %tmp, <4 x float> %tmp3 )		; <i32> [#uses=1]
	%tmp.upgrd.2 = icmp eq i32 %tmp.upgrd.1, 0		; <i1> [#uses=1]
	br i1 %tmp.upgrd.2, label %cond_true, label %UnifiedReturnBlock

cond_true:		; preds = %0
	store <4 x float> zeroinitializer, <4 x float>* %B
	ret void

UnifiedReturnBlock:		; preds = %0
	ret void
}

declare i32 @llvm.ppc.altivec.vcmpeqfp.p(i32, <4 x float>, <4 x float>)