mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-19 11:02:59 +02:00
4e71a166c4
SCEV caches whether SCEV expressions are loop invariant, variant or computable. LICM breaks this cache, almost by definition; so clear the SCEV disposition cache if LICM changed anything. llvm-svn: 268408
32 lines
918 B
LLVM
32 lines
918 B
LLVM
; RUN: opt -S -licm < %s | FileCheck %s --check-prefix=IR-AFTER-TRANSFORM
|
|
; RUN: opt -analyze -scalar-evolution -licm -scalar-evolution < %s | FileCheck %s --check-prefix=SCEV-EXPRS
|
|
|
|
declare void @clobber()
|
|
|
|
define void @f_0(i1* %loc) {
|
|
; IR-AFTER-TRANSFORM-LABEL: @f_0(
|
|
; IR-AFTER-TRANSFORM: loop.outer:
|
|
; IR-AFTER-TRANSFORM-NEXT: call void @clobber()
|
|
; IR-AFTER-TRANSFORM-NEXT: %cond = load i1, i1* %loc
|
|
; IR-AFTER-TRANSFORM-NEXT: br label %loop.inner
|
|
|
|
; SCEV-EXPRS: Classifying expressions for: @f_0
|
|
; SCEV-EXPRS: Classifying expressions for: @f_0
|
|
; SCEV-EXPRS: %cond = load i1, i1* %loc
|
|
; SCEV-EXPRS-NEXT: --> {{.*}} LoopDispositions: { %loop.outer: Variant, %loop.inner: Invariant }
|
|
|
|
entry:
|
|
br label %loop.outer
|
|
|
|
loop.outer:
|
|
call void @clobber()
|
|
br label %loop.inner
|
|
|
|
loop.inner:
|
|
%cond = load i1, i1* %loc
|
|
br i1 %cond, label %loop.inner, label %leave.inner
|
|
|
|
leave.inner:
|
|
br label %loop.outer
|
|
}
|