[llvm] r220873 - Test Case for r220872:Do not simplifyLatch for loops where hoisting increments couldresult in extra live range interferance

[NAKAMURA Takumi]

Fixed in r220880.

2014-10-30 7:15 GMT+09:00 Adrian Prantl <aprantl at apple.com>:
> This testcase is failing on our build bots:
> http://lab.llvm.org:8080/green/view/Clang%20Stage%201/job/clang-stage1-configure-RA_check/597/consoleFull#-15017152668254eaf0-7326-4999-85b0-388101f2d404
>
> Could you please fix/revert this change?
>
> thanks,
> adrian
>
>> On Oct 29, 2014, at 1:20 PM, Yi Jiang <yjiang at apple.com> wrote:
>>
>> Author: yjiang
>> Date: Wed Oct 29 15:20:33 2014
>> New Revision: 220873
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=220873&view=rev
>> Log:
>> Test Case for r220872:Do not simplifyLatch for loops where hoisting increments couldresult in extra live range interferance
>>
>> Added:
>>    llvm/trunk/test/Transforms/LoopRotate/nosimplifylatch.ll
>>
>> Added: llvm/trunk/test/Transforms/LoopRotate/nosimplifylatch.ll
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LoopRotate/nosimplifylatch.ll?rev=220873&view=auto
>> ==============================================================================
>> --- llvm/trunk/test/Transforms/LoopRotate/nosimplifylatch.ll (added)
>> +++ llvm/trunk/test/Transforms/LoopRotate/nosimplifylatch.ll Wed Oct 29 15:20:33 2014
>> @@ -0,0 +1,70 @@
>> +; RUN: opt -S < %s -loop-rotate -licm -verify-dom-info -verify-loop-info | FileCheck %s
>> +target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
>> +target triple = "arm64-apple-ios8.0.0"
>> +
>> +;CHECK: for.inc:
>> +;CHECK-NEXT: %incdec.ptr.i = getelementptr
>> +
>> +; Function Attrs: alwaysinline inlinehint nounwind readonly ssp
>> +define linkonce_odr hidden i64 @_ZNSt3__14findINS_11__wrap_iterIPiEEiEET_S4_S4_RKT0_(i64 %__first.coerce, i64 %__last.coerce, i32* nocapture readonly dereferenceable(4) %__value_) {
>> +entry:
>> +  %coerce.val.ip = inttoptr i64 %__first.coerce to i32*
>> +  %coerce.val.ip2 = inttoptr i64 %__last.coerce to i32*
>> +  br label %for.cond
>> +
>> +for.cond:                                         ; preds = %for.inc, %entry
>> +  %coerce.val.ip9 = phi i32* [ %incdec.ptr.i, %for.inc ], [ %coerce.val.ip, %entry ]
>> +  %lnot.i = icmp eq i32* %coerce.val.ip9, %coerce.val.ip2
>> +  br i1 %lnot.i, label %for.end, label %for.body
>> +
>> +for.body:                                         ; preds = %for.cond
>> +  %0 = load i32* %coerce.val.ip9, align 4
>> +  %1 = load i32* %__value_, align 4
>> +  %cmp = icmp eq i32 %0, %1
>> +  br i1 %cmp, label %for.end, label %for.inc
>> +
>> +for.inc:                                          ; preds = %for.body
>> +  %incdec.ptr.i = getelementptr inbounds i32* %coerce.val.ip9, i64 1
>> +  br label %for.cond
>> +
>> +for.end:                                          ; preds = %for.cond, %for.body
>> +  %coerce.val.ip9.lcssa = phi i32* [ %coerce.val.ip9, %for.cond ], [ %coerce.val.ip9, %for.body ]
>> +  %coerce.val.pi = ptrtoint i32* %coerce.val.ip9.lcssa to i64
>> +  ret i64 %coerce.val.pi
>> +}
>> +
>> +; RUN: opt -S < %s -loop-rotate -licm -verify-dom-info -verify-loop-info | FileCheck %s
>> +target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
>> +target triple = "arm64-apple-ios8.0.0"
>> +
>> +;CHECK: for.inc:
>> +;CHECK-NEXT: %incdec.ptr.i = getelementptr
>> +
>> +; Function Attrs: alwaysinline inlinehint nounwind readonly ssp
>> +define linkonce_odr hidden i64 @_ZNSt3__14findINS_11__wrap_iterIPiEEiEET_S4_S4_RKT0_(i64 %__first.coerce, i64 %__last.coerce, i32* nocapture readonly dereferenceable(4) %__value_) {
>> +entry:
>> +  %coerce.val.ip = inttoptr i64 %__first.coerce to i32*
>> +  %coerce.val.ip2 = inttoptr i64 %__last.coerce to i32*
>> +  br label %for.cond
>> +
>> +for.cond:                                         ; preds = %for.inc, %entry
>> +  %coerce.val.ip9 = phi i32* [ %incdec.ptr.i, %for.inc ], [ %coerce.val.ip, %entry ]
>> +  %lnot.i = icmp eq i32* %coerce.val.ip9, %coerce.val.ip2
>> +  br i1 %lnot.i, label %for.end, label %for.body
>> +
>> +for.body:                                         ; preds = %for.cond
>> +  %0 = load i32* %coerce.val.ip9, align 4
>> +  %1 = load i32* %__value_, align 4
>> +  %cmp = icmp eq i32 %0, %1
>> +  br i1 %cmp, label %for.end, label %for.inc
>> +
>> +for.inc:                                          ; preds = %for.body
>> +  %incdec.ptr.i = getelementptr inbounds i32* %coerce.val.ip9, i64 1
>> +  br label %for.cond
>> +
>> +for.end:                                          ; preds = %for.cond, %for.body
>> +  %coerce.val.ip9.lcssa = phi i32* [ %coerce.val.ip9, %for.cond ], [ %coerce.val.ip9, %for.body ]
>> +  %coerce.val.pi = ptrtoint i32* %coerce.val.ip9.lcssa to i64
>> +  ret i64 %coerce.val.pi
>> +}
>> +
>>
>>
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