File: vec_br_cmp.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
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>)