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llvm-mirror/test/Transforms/IndVarSimplify/2011-11-01-lftrptr.ll

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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]], align 1
; 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]], align 1
; 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]], align 1
; 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]], align 1
; 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]], align 1
; 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]], align 1
; 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]], align 1
; 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]], align 1
; 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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