| ; 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 |
| ; 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 |
| ; |
| ; 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. |
| |
| ; CHECK-LABEL: @testnullptrptr( |
| ; CHECK: loop: |
| ; CHECK: icmp ne |
| define i8 @testnullptrptr(i8* %buf, i8* %end) nounwind { |
| 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 |
| } |
| |
| ; CHECK-LABEL: @testptrptr( |
| ; CHECK: loop: |
| ; CHECK: icmp ne |
| define i8 @testptrptr(i8* %buf, i8* %end) nounwind { |
| 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 |
| } |
| |
| ; CHECK-LABEL: @testnullptrint( |
| ; CHECK: loop: |
| ; CHECK: icmp ne |
| define i8 @testnullptrint(i8* %buf, i8* %end) nounwind { |
| 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 |
| } |
| |
| ; CHECK-LABEL: @testptrint( |
| ; CHECK: loop: |
| ; CHECK: icmp ne |
| define i8 @testptrint(i8* %buf, i8* %end) nounwind { |
| 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 { |
| 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 |
| } |