forked from OSchip/llvm-project
25 lines
744 B
LLVM
25 lines
744 B
LLVM
; RUN: opt < %s -loop-reduce -S | grep phi | count 1
|
|
|
|
; This testcase should have ONE stride 18 indvar, the other use should have a
|
|
; loop invariant value (B) added to it inside of the loop, instead of having
|
|
; a whole indvar based on B for it.
|
|
|
|
declare i1 @cond(i32)
|
|
|
|
define void @test(i32 %B) {
|
|
; <label>:0
|
|
br label %Loop
|
|
Loop: ; preds = %Loop, %0
|
|
%IV = phi i32 [ 0, %0 ], [ %IVn, %Loop ] ; <i32> [#uses=3]
|
|
%C = mul i32 %IV, 18 ; <i32> [#uses=1]
|
|
%D = mul i32 %IV, 18 ; <i32> [#uses=1]
|
|
%E = add i32 %D, %B ; <i32> [#uses=1]
|
|
%cnd = call i1 @cond( i32 %E ) ; <i1> [#uses=1]
|
|
call i1 @cond( i32 %C ) ; <i1>:1 [#uses=0]
|
|
%IVn = add i32 %IV, 1 ; <i32> [#uses=1]
|
|
br i1 %cnd, label %Loop, label %Out
|
|
Out: ; preds = %Loop
|
|
ret void
|
|
}
|
|
|