File: variable_stride.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-6~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,418,812 kB
  • sloc: cpp: 5,290,827; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,900; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,892; xml: 953; cs: 573; fortran: 539
file content (21 lines) | stat: -rw-r--r-- 614 bytes parent folder | download | duplicates (22) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
; Check that variable strides are reduced to adds instead of multiplies.
; RUN: opt < %s -loop-reduce -S | not grep mul

; Provide legal integer types.
target datalayout = "n8:16:32:64"

declare i1 @pred(i32)

define void @test([10000 x i32]* %P, i32 %STRIDE) {
; <label>:0
	br label %Loop
Loop:		; preds = %Loop, %0
	%INDVAR = phi i32 [ 0, %0 ], [ %INDVAR2, %Loop ]		; <i32> [#uses=2]
	%Idx = mul i32 %INDVAR, %STRIDE		; <i32> [#uses=1]
	%cond = call i1 @pred( i32 %Idx )		; <i1> [#uses=1]
	%INDVAR2 = add i32 %INDVAR, 1		; <i32> [#uses=1]
	br i1 %cond, label %Loop, label %Out
Out:		; preds = %Loop
	ret void
}