File: fneg.ll

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (24 lines) | stat: -rw-r--r-- 854 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
; RUN: opt %s -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S | FileCheck %s

define void @foo(float* %a, i64 %n) {
; CHECK:       vector.body:
; CHECK:         [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* {{.*}}, align 4
; CHECK-NEXT:    [[TMP4:%.*]] = fneg <4 x float> [[WIDE_LOAD]]
; CHECK:         store <4 x float> [[TMP4]], <4 x float>* {{.*}}, align 4
;
entry:
  br label %for.body

for.body:
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %arrayidx = getelementptr inbounds float, float* %a, i64 %indvars.iv
  %0 = load float, float* %arrayidx, align 4
  %sub = fneg float %0
  store float %sub, float* %arrayidx, align 4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %cmp = icmp eq i64 %indvars.iv.next, %n
  br i1 %cmp, label %for.exit, label %for.body

for.exit:
  ret void
}