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llvm-mirror/test/Transforms/IndVarSimplify/2011-11-01-lftrptr.ll
Philip Reames 45f8df4a39 [LFTR] Use SCEVExpander for the pointer limit case instead of manual IR gen 
As noted in the test change, this is not trivially NFC, but all of the changes in output are cases where the SCEVExpander form is more canonical/optimal than the hand generation.  

llvm-svn: 365075
2019-07-03 20:03:46 +00:00

354 lines
15 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -indvars -S "-data-layout=e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" | FileCheck -check-prefix=PTR64 %s
; RUN: opt < %s -indvars -S "-data-layout=e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32" | FileCheck -check-prefix=PTR32 %s
;
; PR11279: Assertion !IVLimit->getType()->isPointerTy()
;
; Test LinearFunctionTestReplace of a pointer-type loop counter. Note
; that BECount may or may not be a pointer type. A pointer type
; BECount doesn't really make sense, but that's what falls out of
; SCEV. Since it's an i8*, it has unit stride so we never adjust the
; SCEV expression in a way that would convert it to an integer type.
define i8 @testnullptrptr(i8* %buf, i8* %end) nounwind {
; PTR64-LABEL: @testnullptrptr(
; PTR64-NEXT: br label [[LOOPGUARD:%.*]]
; PTR64: loopguard:
; PTR64-NEXT: [[GUARD:%.*]] = icmp ult i8* null, [[END:%.*]]
; PTR64-NEXT: br i1 [[GUARD]], label [[PREHEADER:%.*]], label [[EXIT:%.*]]
; PTR64: preheader:
; PTR64-NEXT: br label [[LOOP:%.*]]
; PTR64: loop:
; PTR64-NEXT: [[P_01_US_US:%.*]] = phi i8* [ null, [[PREHEADER]] ], [ [[GEP:%.*]], [[LOOP]] ]
; PTR64-NEXT: [[GEP]] = getelementptr inbounds i8, i8* [[P_01_US_US]], i64 1
; PTR64-NEXT: [[SNEXT:%.*]] = load i8, i8* [[GEP]]
; PTR64-NEXT: [[EXITCOND:%.*]] = icmp ne i8* [[GEP]], [[END]]
; PTR64-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; PTR64: exit.loopexit:
; PTR64-NEXT: [[SNEXT_LCSSA:%.*]] = phi i8 [ [[SNEXT]], [[LOOP]] ]
; PTR64-NEXT: br label [[EXIT]]
; PTR64: exit:
; PTR64-NEXT: [[RET:%.*]] = phi i8 [ 0, [[LOOPGUARD]] ], [ [[SNEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; PTR64-NEXT: ret i8 [[RET]]
;
; PTR32-LABEL: @testnullptrptr(
; PTR32-NEXT: br label [[LOOPGUARD:%.*]]
; PTR32: loopguard:
; PTR32-NEXT: [[GUARD:%.*]] = icmp ult i8* null, [[END:%.*]]
; PTR32-NEXT: br i1 [[GUARD]], label [[PREHEADER:%.*]], label [[EXIT:%.*]]
; PTR32: preheader:
; PTR32-NEXT: br label [[LOOP:%.*]]
; PTR32: loop:
; PTR32-NEXT: [[P_01_US_US:%.*]] = phi i8* [ null, [[PREHEADER]] ], [ [[GEP:%.*]], [[LOOP]] ]
; PTR32-NEXT: [[GEP]] = getelementptr inbounds i8, i8* [[P_01_US_US]], i64 1
; PTR32-NEXT: [[SNEXT:%.*]] = load i8, i8* [[GEP]]
; PTR32-NEXT: [[EXITCOND:%.*]] = icmp ne i8* [[GEP]], [[END]]
; PTR32-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; PTR32: exit.loopexit:
; PTR32-NEXT: [[SNEXT_LCSSA:%.*]] = phi i8 [ [[SNEXT]], [[LOOP]] ]
; PTR32-NEXT: br label [[EXIT]]
; PTR32: exit:
; PTR32-NEXT: [[RET:%.*]] = phi i8 [ 0, [[LOOPGUARD]] ], [ [[SNEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; PTR32-NEXT: ret i8 [[RET]]
;
br label %loopguard
loopguard:
%guard = icmp ult i8* null, %end
br i1 %guard, label %preheader, label %exit
preheader:
br label %loop
loop:
%p.01.us.us = phi i8* [ null, %preheader ], [ %gep, %loop ]
%s = phi i8 [0, %preheader], [%snext, %loop]
%gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
%snext = load i8, i8* %gep
%cmp = icmp ult i8* %gep, %end
br i1 %cmp, label %loop, label %exit
exit:
%ret = phi i8 [0, %loopguard], [%snext, %loop]
ret i8 %ret
}
define i8 @testptrptr(i8* %buf, i8* %end) nounwind {
; PTR64-LABEL: @testptrptr(
; PTR64-NEXT: br label [[LOOPGUARD:%.*]]
; PTR64: loopguard:
; PTR64-NEXT: [[GUARD:%.*]] = icmp ult i8* [[BUF:%.*]], [[END:%.*]]
; PTR64-NEXT: br i1 [[GUARD]], label [[PREHEADER:%.*]], label [[EXIT:%.*]]
; PTR64: preheader:
; PTR64-NEXT: br label [[LOOP:%.*]]
; PTR64: loop:
; PTR64-NEXT: [[P_01_US_US:%.*]] = phi i8* [ [[BUF]], [[PREHEADER]] ], [ [[GEP:%.*]], [[LOOP]] ]
; PTR64-NEXT: [[GEP]] = getelementptr inbounds i8, i8* [[P_01_US_US]], i64 1
; PTR64-NEXT: [[SNEXT:%.*]] = load i8, i8* [[GEP]]
; PTR64-NEXT: [[EXITCOND:%.*]] = icmp ne i8* [[GEP]], [[END]]
; PTR64-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; PTR64: exit.loopexit:
; PTR64-NEXT: [[SNEXT_LCSSA:%.*]] = phi i8 [ [[SNEXT]], [[LOOP]] ]
; PTR64-NEXT: br label [[EXIT]]
; PTR64: exit:
; PTR64-NEXT: [[RET:%.*]] = phi i8 [ 0, [[LOOPGUARD]] ], [ [[SNEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; PTR64-NEXT: ret i8 [[RET]]
;
; PTR32-LABEL: @testptrptr(
; PTR32-NEXT: br label [[LOOPGUARD:%.*]]
; PTR32: loopguard:
; PTR32-NEXT: [[GUARD:%.*]] = icmp ult i8* [[BUF:%.*]], [[END:%.*]]
; PTR32-NEXT: br i1 [[GUARD]], label [[PREHEADER:%.*]], label [[EXIT:%.*]]
; PTR32: preheader:
; PTR32-NEXT: br label [[LOOP:%.*]]
; PTR32: loop:
; PTR32-NEXT: [[P_01_US_US:%.*]] = phi i8* [ [[BUF]], [[PREHEADER]] ], [ [[GEP:%.*]], [[LOOP]] ]
; PTR32-NEXT: [[GEP]] = getelementptr inbounds i8, i8* [[P_01_US_US]], i64 1
; PTR32-NEXT: [[SNEXT:%.*]] = load i8, i8* [[GEP]]
; PTR32-NEXT: [[EXITCOND:%.*]] = icmp ne i8* [[GEP]], [[END]]
; PTR32-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; PTR32: exit.loopexit:
; PTR32-NEXT: [[SNEXT_LCSSA:%.*]] = phi i8 [ [[SNEXT]], [[LOOP]] ]
; PTR32-NEXT: br label [[EXIT]]
; PTR32: exit:
; PTR32-NEXT: [[RET:%.*]] = phi i8 [ 0, [[LOOPGUARD]] ], [ [[SNEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; PTR32-NEXT: ret i8 [[RET]]
;
br label %loopguard
loopguard:
%guard = icmp ult i8* %buf, %end
br i1 %guard, label %preheader, label %exit
preheader:
br label %loop
loop:
%p.01.us.us = phi i8* [ %buf, %preheader ], [ %gep, %loop ]
%s = phi i8 [0, %preheader], [%snext, %loop]
%gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
%snext = load i8, i8* %gep
%cmp = icmp ult i8* %gep, %end
br i1 %cmp, label %loop, label %exit
exit:
%ret = phi i8 [0, %loopguard], [%snext, %loop]
ret i8 %ret
}
define i8 @testnullptrint(i8* %buf, i8* %end) nounwind {
; PTR64-LABEL: @testnullptrint(
; PTR64-NEXT: br label [[LOOPGUARD:%.*]]
; PTR64: loopguard:
; PTR64-NEXT: [[BI:%.*]] = ptrtoint i8* [[BUF:%.*]] to i32
; PTR64-NEXT: [[EI:%.*]] = ptrtoint i8* [[END:%.*]] to i32
; PTR64-NEXT: [[CNT:%.*]] = sub i32 [[EI]], [[BI]]
; PTR64-NEXT: [[GUARD:%.*]] = icmp ult i32 0, [[CNT]]
; PTR64-NEXT: br i1 [[GUARD]], label [[PREHEADER:%.*]], label [[EXIT:%.*]]
; PTR64: preheader:
; PTR64-NEXT: [[TMP1:%.*]] = add i32 [[EI]], -1
; PTR64-NEXT: [[TMP2:%.*]] = sub i32 [[TMP1]], [[BI]]
; PTR64-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64
; PTR64-NEXT: [[TMP4:%.*]] = add nuw nsw i64 [[TMP3]], 1
; PTR64-NEXT: [[TMP5:%.*]] = inttoptr i64 [[TMP4]] to i8*
; PTR64-NEXT: br label [[LOOP:%.*]]
; PTR64: loop:
; PTR64-NEXT: [[P_01_US_US:%.*]] = phi i8* [ null, [[PREHEADER]] ], [ [[GEP:%.*]], [[LOOP]] ]
; PTR64-NEXT: [[GEP]] = getelementptr inbounds i8, i8* [[P_01_US_US]], i64 1
; PTR64-NEXT: [[SNEXT:%.*]] = load i8, i8* [[GEP]]
; PTR64-NEXT: [[EXITCOND:%.*]] = icmp ne i8* [[GEP]], [[TMP5]]
; PTR64-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; PTR64: exit.loopexit:
; PTR64-NEXT: [[SNEXT_LCSSA:%.*]] = phi i8 [ [[SNEXT]], [[LOOP]] ]
; PTR64-NEXT: br label [[EXIT]]
; PTR64: exit:
; PTR64-NEXT: [[RET:%.*]] = phi i8 [ 0, [[LOOPGUARD]] ], [ [[SNEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; PTR64-NEXT: ret i8 [[RET]]
;
; PTR32-LABEL: @testnullptrint(
; PTR32-NEXT: br label [[LOOPGUARD:%.*]]
; PTR32: loopguard:
; PTR32-NEXT: [[BI:%.*]] = ptrtoint i8* [[BUF:%.*]] to i32
; PTR32-NEXT: [[EI:%.*]] = ptrtoint i8* [[END:%.*]] to i32
; PTR32-NEXT: [[CNT:%.*]] = sub i32 [[EI]], [[BI]]
; PTR32-NEXT: [[CNT1:%.*]] = inttoptr i32 [[CNT]] to i8*
; PTR32-NEXT: [[GUARD:%.*]] = icmp ult i32 0, [[CNT]]
; PTR32-NEXT: br i1 [[GUARD]], label [[PREHEADER:%.*]], label [[EXIT:%.*]]
; PTR32: preheader:
; PTR32-NEXT: br label [[LOOP:%.*]]
; PTR32: loop:
; PTR32-NEXT: [[P_01_US_US:%.*]] = phi i8* [ null, [[PREHEADER]] ], [ [[GEP:%.*]], [[LOOP]] ]
; PTR32-NEXT: [[GEP]] = getelementptr inbounds i8, i8* [[P_01_US_US]], i64 1
; PTR32-NEXT: [[SNEXT:%.*]] = load i8, i8* [[GEP]]
; PTR32-NEXT: [[EXITCOND:%.*]] = icmp ne i8* [[GEP]], [[CNT1]]
; PTR32-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; PTR32: exit.loopexit:
; PTR32-NEXT: [[SNEXT_LCSSA:%.*]] = phi i8 [ [[SNEXT]], [[LOOP]] ]
; PTR32-NEXT: br label [[EXIT]]
; PTR32: exit:
; PTR32-NEXT: [[RET:%.*]] = phi i8 [ 0, [[LOOPGUARD]] ], [ [[SNEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; PTR32-NEXT: ret i8 [[RET]]
;
br label %loopguard
loopguard:
%bi = ptrtoint i8* %buf to i32
%ei = ptrtoint i8* %end to i32
%cnt = sub i32 %ei, %bi
%guard = icmp ult i32 0, %cnt
br i1 %guard, label %preheader, label %exit
preheader:
br label %loop
loop:
%p.01.us.us = phi i8* [ null, %preheader ], [ %gep, %loop ]
%iv = phi i32 [ 0, %preheader ], [ %ivnext, %loop ]
%s = phi i8 [0, %preheader], [%snext, %loop]
%gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
%snext = load i8, i8* %gep
%ivnext = add i32 %iv, 1
%cmp = icmp ult i32 %ivnext, %cnt
br i1 %cmp, label %loop, label %exit
exit:
%ret = phi i8 [0, %loopguard], [%snext, %loop]
ret i8 %ret
}
define i8 @testptrint(i8* %buf, i8* %end) nounwind {
; PTR64-LABEL: @testptrint(
; PTR64-NEXT: br label [[LOOPGUARD:%.*]]
; PTR64: loopguard:
; PTR64-NEXT: [[BI:%.*]] = ptrtoint i8* [[BUF:%.*]] to i32
; PTR64-NEXT: [[EI:%.*]] = ptrtoint i8* [[END:%.*]] to i32
; PTR64-NEXT: [[CNT:%.*]] = sub i32 [[EI]], [[BI]]
; PTR64-NEXT: [[GUARD:%.*]] = icmp ult i32 [[BI]], [[CNT]]
; PTR64-NEXT: br i1 [[GUARD]], label [[PREHEADER:%.*]], label [[EXIT:%.*]]
; PTR64: preheader:
; PTR64-NEXT: br label [[LOOP:%.*]]
; PTR64: loop:
; PTR64-NEXT: [[P_01_US_US:%.*]] = phi i8* [ [[BUF]], [[PREHEADER]] ], [ [[GEP:%.*]], [[LOOP]] ]
; PTR64-NEXT: [[IV:%.*]] = phi i32 [ [[BI]], [[PREHEADER]] ], [ [[IVNEXT:%.*]], [[LOOP]] ]
; PTR64-NEXT: [[GEP]] = getelementptr inbounds i8, i8* [[P_01_US_US]], i64 1
; PTR64-NEXT: [[SNEXT:%.*]] = load i8, i8* [[GEP]]
; PTR64-NEXT: [[IVNEXT]] = add nuw i32 [[IV]], 1
; PTR64-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[IVNEXT]], [[CNT]]
; PTR64-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; PTR64: exit.loopexit:
; PTR64-NEXT: [[SNEXT_LCSSA:%.*]] = phi i8 [ [[SNEXT]], [[LOOP]] ]
; PTR64-NEXT: br label [[EXIT]]
; PTR64: exit:
; PTR64-NEXT: [[RET:%.*]] = phi i8 [ 0, [[LOOPGUARD]] ], [ [[SNEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; PTR64-NEXT: ret i8 [[RET]]
;
; PTR32-LABEL: @testptrint(
; PTR32-NEXT: br label [[LOOPGUARD:%.*]]
; PTR32: loopguard:
; PTR32-NEXT: [[BI:%.*]] = ptrtoint i8* [[BUF:%.*]] to i32
; PTR32-NEXT: [[EI:%.*]] = ptrtoint i8* [[END:%.*]] to i32
; PTR32-NEXT: [[CNT:%.*]] = sub i32 [[EI]], [[BI]]
; PTR32-NEXT: [[GUARD:%.*]] = icmp ult i32 [[BI]], [[CNT]]
; PTR32-NEXT: br i1 [[GUARD]], label [[PREHEADER:%.*]], label [[EXIT:%.*]]
; PTR32: preheader:
; PTR32-NEXT: br label [[LOOP:%.*]]
; PTR32: loop:
; PTR32-NEXT: [[P_01_US_US:%.*]] = phi i8* [ [[BUF]], [[PREHEADER]] ], [ [[GEP:%.*]], [[LOOP]] ]
; PTR32-NEXT: [[IV:%.*]] = phi i32 [ [[BI]], [[PREHEADER]] ], [ [[IVNEXT:%.*]], [[LOOP]] ]
; PTR32-NEXT: [[GEP]] = getelementptr inbounds i8, i8* [[P_01_US_US]], i64 1
; PTR32-NEXT: [[SNEXT:%.*]] = load i8, i8* [[GEP]]
; PTR32-NEXT: [[IVNEXT]] = add nuw i32 [[IV]], 1
; PTR32-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[IVNEXT]], [[CNT]]
; PTR32-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; PTR32: exit.loopexit:
; PTR32-NEXT: [[SNEXT_LCSSA:%.*]] = phi i8 [ [[SNEXT]], [[LOOP]] ]
; PTR32-NEXT: br label [[EXIT]]
; PTR32: exit:
; PTR32-NEXT: [[RET:%.*]] = phi i8 [ 0, [[LOOPGUARD]] ], [ [[SNEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; PTR32-NEXT: ret i8 [[RET]]
;
br label %loopguard
loopguard:
%bi = ptrtoint i8* %buf to i32
%ei = ptrtoint i8* %end to i32
%cnt = sub i32 %ei, %bi
%guard = icmp ult i32 %bi, %cnt
br i1 %guard, label %preheader, label %exit
preheader:
br label %loop
loop:
%p.01.us.us = phi i8* [ %buf, %preheader ], [ %gep, %loop ]
%iv = phi i32 [ %bi, %preheader ], [ %ivnext, %loop ]
%s = phi i8 [0, %preheader], [%snext, %loop]
%gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
%snext = load i8, i8* %gep
%ivnext = add i32 %iv, 1
%cmp = icmp ult i32 %ivnext, %cnt
br i1 %cmp, label %loop, label %exit
exit:
%ret = phi i8 [0, %loopguard], [%snext, %loop]
ret i8 %ret
}
; IV and BECount have two different pointer types here.
define void @testnullptr([512 x i8]* %base) nounwind {
; PTR64-LABEL: @testnullptr(
; PTR64-NEXT: entry:
; PTR64-NEXT: [[ADD_PTR1603:%.*]] = getelementptr [512 x i8], [512 x i8]* [[BASE:%.*]], i64 0, i64 512
; PTR64-NEXT: br label [[PREHEADER:%.*]]
; PTR64: preheader:
; PTR64-NEXT: [[CMP1604192:%.*]] = icmp ult i8* undef, [[ADD_PTR1603]]
; PTR64-NEXT: br i1 [[CMP1604192]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END1609:%.*]]
; PTR64: for.body.preheader:
; PTR64-NEXT: br label [[FOR_BODY:%.*]]
; PTR64: for.body:
; PTR64-NEXT: [[R_17193:%.*]] = phi i8* [ [[INCDEC_PTR1608:%.*]], [[FOR_BODY]] ], [ null, [[FOR_BODY_PREHEADER]] ]
; PTR64-NEXT: [[INCDEC_PTR1608]] = getelementptr i8, i8* [[R_17193]], i64 1
; PTR64-NEXT: [[CMP1604:%.*]] = icmp ult i8* [[INCDEC_PTR1608]], [[ADD_PTR1603]]
; PTR64-NEXT: br i1 [[CMP1604]], label [[FOR_BODY]], label [[FOR_END1609_LOOPEXIT:%.*]]
; PTR64: for.end1609.loopexit:
; PTR64-NEXT: br label [[FOR_END1609]]
; PTR64: for.end1609:
; PTR64-NEXT: unreachable
;
; PTR32-LABEL: @testnullptr(
; PTR32-NEXT: entry:
; PTR32-NEXT: [[ADD_PTR1603:%.*]] = getelementptr [512 x i8], [512 x i8]* [[BASE:%.*]], i64 0, i64 512
; PTR32-NEXT: br label [[PREHEADER:%.*]]
; PTR32: preheader:
; PTR32-NEXT: [[CMP1604192:%.*]] = icmp ult i8* undef, [[ADD_PTR1603]]
; PTR32-NEXT: br i1 [[CMP1604192]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END1609:%.*]]
; PTR32: for.body.preheader:
; PTR32-NEXT: br label [[FOR_BODY:%.*]]
; PTR32: for.body:
; PTR32-NEXT: [[R_17193:%.*]] = phi i8* [ [[INCDEC_PTR1608:%.*]], [[FOR_BODY]] ], [ null, [[FOR_BODY_PREHEADER]] ]
; PTR32-NEXT: [[INCDEC_PTR1608]] = getelementptr i8, i8* [[R_17193]], i64 1
; PTR32-NEXT: [[CMP1604:%.*]] = icmp ult i8* [[INCDEC_PTR1608]], [[ADD_PTR1603]]
; PTR32-NEXT: br i1 [[CMP1604]], label [[FOR_BODY]], label [[FOR_END1609_LOOPEXIT:%.*]]
; PTR32: for.end1609.loopexit:
; PTR32-NEXT: br label [[FOR_END1609]]
; PTR32: for.end1609:
; PTR32-NEXT: unreachable
;
entry:
%add.ptr1603 = getelementptr [512 x i8], [512 x i8]* %base, i64 0, i64 512
br label %preheader
preheader:
%cmp1604192 = icmp ult i8* undef, %add.ptr1603
br i1 %cmp1604192, label %for.body, label %for.end1609
for.body:
%r.17193 = phi i8* [ %incdec.ptr1608, %for.body ], [ null, %preheader ]
%incdec.ptr1608 = getelementptr i8, i8* %r.17193, i64 1
%cmp1604 = icmp ult i8* %incdec.ptr1608, %add.ptr1603
br i1 %cmp1604, label %for.body, label %for.end1609
for.end1609:
unreachable
}
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