forked from OSchip/llvm-project
21 lines
691 B
LLVM
21 lines
691 B
LLVM
; RUN: opt -S -indvars < %s | FileCheck %s
|
|
|
|
; The indvar simplification code should ensure that the first PHI in the block
|
|
; is the canonical one!
|
|
|
|
define i32 @test() {
|
|
; <label>:0
|
|
br label %Loop
|
|
|
|
Loop: ; preds = %Loop, %0
|
|
; CHECK: Loop:
|
|
; CHECK-NEXT: Canonical
|
|
%NonIndvar = phi i32 [ 200, %0 ], [ %NonIndvarNext, %Loop ] ; <i32> [#uses=1]
|
|
%Canonical = phi i32 [ 0, %0 ], [ %CanonicalNext, %Loop ] ; <i32> [#uses=2]
|
|
store i32 %Canonical, i32* null
|
|
%NonIndvarNext = sdiv i32 %NonIndvar, 2 ; <i32> [#uses=1]
|
|
%CanonicalNext = add i32 %Canonical, 1 ; <i32> [#uses=1]
|
|
br label %Loop
|
|
}
|
|
|