File: variable_stride.ll

package info (click to toggle)
llvm-2.7 2.7-6
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 59,992 kB
  • ctags: 49,499
  • sloc: cpp: 373,792; ansic: 16,885; sh: 12,614; asm: 6,809; ada: 3,083; ml: 2,942; python: 2,671; perl: 2,404; makefile: 1,691; pascal: 1,235; exp: 399; objc: 291; lisp: 184; csh: 117; xml: 38; f90: 36
file content (18 lines) | stat: -rw-r--r-- 548 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
; Check that variable strides are reduced to adds instead of multiplies.
; RUN: opt < %s -loop-reduce -S | not grep mul

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
}