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Imported Upstream version 5.18.0.207
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; 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 %s
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; 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 %s
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;
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; PR11279: Assertion !IVLimit->getType()->isPointerTy()
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;
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; Test LinearFunctionTestReplace of a pointer-type loop counter. Note
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; that BECount may or may not be a pointer type. A pointer type
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; BECount doesn't really make sense, but that's what falls out of
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; SCEV. Since it's an i8*, it has unit stride so we never adjust the
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; SCEV expression in a way that would convert it to an integer type.
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; CHECK-LABEL: @testnullptrptr(
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; CHECK: loop:
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; CHECK: icmp ne
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define i8 @testnullptrptr(i8* %buf, i8* %end) nounwind {
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br label %loopguard
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loopguard:
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%guard = icmp ult i8* null, %end
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br i1 %guard, label %preheader, label %exit
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preheader:
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br label %loop
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loop:
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%p.01.us.us = phi i8* [ null, %preheader ], [ %gep, %loop ]
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%s = phi i8 [0, %preheader], [%snext, %loop]
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%gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
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%snext = load i8, i8* %gep
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%cmp = icmp ult i8* %gep, %end
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br i1 %cmp, label %loop, label %exit
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exit:
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%ret = phi i8 [0, %loopguard], [%snext, %loop]
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ret i8 %ret
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}
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; CHECK-LABEL: @testptrptr(
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; CHECK: loop:
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; CHECK: icmp ne
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define i8 @testptrptr(i8* %buf, i8* %end) nounwind {
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br label %loopguard
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loopguard:
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%guard = icmp ult i8* %buf, %end
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br i1 %guard, label %preheader, label %exit
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preheader:
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br label %loop
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loop:
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%p.01.us.us = phi i8* [ %buf, %preheader ], [ %gep, %loop ]
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%s = phi i8 [0, %preheader], [%snext, %loop]
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%gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
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%snext = load i8, i8* %gep
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%cmp = icmp ult i8* %gep, %end
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br i1 %cmp, label %loop, label %exit
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exit:
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%ret = phi i8 [0, %loopguard], [%snext, %loop]
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ret i8 %ret
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}
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; CHECK-LABEL: @testnullptrint(
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; CHECK: loop:
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; CHECK: icmp ne
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define i8 @testnullptrint(i8* %buf, i8* %end) nounwind {
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br label %loopguard
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loopguard:
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%bi = ptrtoint i8* %buf to i32
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%ei = ptrtoint i8* %end to i32
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%cnt = sub i32 %ei, %bi
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%guard = icmp ult i32 0, %cnt
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br i1 %guard, label %preheader, label %exit
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preheader:
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br label %loop
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loop:
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%p.01.us.us = phi i8* [ null, %preheader ], [ %gep, %loop ]
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%iv = phi i32 [ 0, %preheader ], [ %ivnext, %loop ]
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%s = phi i8 [0, %preheader], [%snext, %loop]
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%gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
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%snext = load i8, i8* %gep
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%ivnext = add i32 %iv, 1
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%cmp = icmp ult i32 %ivnext, %cnt
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br i1 %cmp, label %loop, label %exit
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exit:
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%ret = phi i8 [0, %loopguard], [%snext, %loop]
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ret i8 %ret
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}
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; CHECK-LABEL: @testptrint(
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; CHECK: loop:
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; CHECK: icmp ne
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define i8 @testptrint(i8* %buf, i8* %end) nounwind {
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br label %loopguard
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loopguard:
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%bi = ptrtoint i8* %buf to i32
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%ei = ptrtoint i8* %end to i32
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%cnt = sub i32 %ei, %bi
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%guard = icmp ult i32 %bi, %cnt
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br i1 %guard, label %preheader, label %exit
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preheader:
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br label %loop
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loop:
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%p.01.us.us = phi i8* [ %buf, %preheader ], [ %gep, %loop ]
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%iv = phi i32 [ %bi, %preheader ], [ %ivnext, %loop ]
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%s = phi i8 [0, %preheader], [%snext, %loop]
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%gep = getelementptr inbounds i8, i8* %p.01.us.us, i64 1
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%snext = load i8, i8* %gep
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%ivnext = add i32 %iv, 1
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%cmp = icmp ult i32 %ivnext, %cnt
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br i1 %cmp, label %loop, label %exit
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exit:
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%ret = phi i8 [0, %loopguard], [%snext, %loop]
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ret i8 %ret
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}
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; IV and BECount have two different pointer types here.
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define void @testnullptr([512 x i8]* %base) nounwind {
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entry:
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%add.ptr1603 = getelementptr [512 x i8], [512 x i8]* %base, i64 0, i64 512
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br label %preheader
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preheader:
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%cmp1604192 = icmp ult i8* undef, %add.ptr1603
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br i1 %cmp1604192, label %for.body, label %for.end1609
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for.body:
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%r.17193 = phi i8* [ %incdec.ptr1608, %for.body ], [ null, %preheader ]
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%incdec.ptr1608 = getelementptr i8, i8* %r.17193, i64 1
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%cmp1604 = icmp ult i8* %incdec.ptr1608, %add.ptr1603
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br i1 %cmp1604, label %for.body, label %for.end1609
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for.end1609:
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unreachable
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}
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