19 lines
548 B
LLVM
19 lines
548 B
LLVM
|
; 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
|
||
|
|
}
|
||
|
|
|