File: hvx-loopidiom-memcpy.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 (30 lines) | stat: -rw-r--r-- 1,038 bytes parent folder | download | duplicates (14)
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
27
28
29
30
; RUN: opt -march=hexagon -hexagon-loop-idiom -S < %s | FileCheck %s

; Make sure we don't convert load/store loops into memcpy if the access type
; is a vector. Using vector instructions is generally better in such cases.

; CHECK-NOT: @llvm.memcpy

%s.0 = type { i32 }

define void @f0(%s.0* noalias %a0, %s.0* noalias %a1) #0 align 2 {
b0:
  br i1 undef, label %b1, label %b2

b1:                                               ; preds = %b1, %b0
  %v0 = phi i32 [ %v7, %b1 ], [ 0, %b0 ]
  %v1 = mul nuw nsw i32 %v0, 64
  %v2 = getelementptr %s.0, %s.0* %a0, i32 %v1
  %v3 = getelementptr %s.0, %s.0* %a1, i32 %v1
  %v4 = bitcast %s.0* %v2 to <64 x i32>*
  %v5 = load <64 x i32>, <64 x i32>* %v4, align 256
  %v6 = bitcast %s.0* %v3 to <64 x i32>*
  store <64 x i32> %v5, <64 x i32>* %v6, align 256
  %v7 = add nuw nsw i32 %v0, 1
  br i1 undef, label %b1, label %b2

b2:                                               ; preds = %b1, %b0
  ret void
}

attributes #0 = { "target-cpu"="hexagonv60" "target-features"="+hvx,+hvx-length64b" }