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45f8df4a39
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
100 lines
4.7 KiB
LLVM
100 lines
4.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -indvars -o - %s | FileCheck %s
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target datalayout = "e-p:32:32:32-p1:64:64:64-p2:8:8:8-p3:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32-n8:16:32:64"
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; Derived from ptriv in lftr-reuse.ll
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define void @ptriv_as2(i8 addrspace(2)* %base, i32 %n) nounwind {
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; CHECK-LABEL: @ptriv_as2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[IDX_TRUNC:%.*]] = trunc i32 [[N:%.*]] to i8
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; CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr inbounds i8, i8 addrspace(2)* [[BASE:%.*]], i8 [[IDX_TRUNC]]
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i8 addrspace(2)* [[BASE]], [[ADD_PTR]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]]
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; CHECK: for.body.preheader:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[P_02:%.*]] = phi i8 addrspace(2)* [ [[INCDEC_PTR:%.*]], [[FOR_BODY]] ], [ [[BASE]], [[FOR_BODY_PREHEADER]] ]
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; CHECK-NEXT: [[SUB_PTR_LHS_CAST:%.*]] = ptrtoint i8 addrspace(2)* [[P_02]] to i8
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; CHECK-NEXT: [[SUB_PTR_RHS_CAST:%.*]] = ptrtoint i8 addrspace(2)* [[BASE]] to i8
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; CHECK-NEXT: [[SUB_PTR_SUB:%.*]] = sub i8 [[SUB_PTR_LHS_CAST]], [[SUB_PTR_RHS_CAST]]
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; CHECK-NEXT: store i8 [[SUB_PTR_SUB]], i8 addrspace(2)* [[P_02]]
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; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, i8 addrspace(2)* [[P_02]], i32 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i8 addrspace(2)* [[INCDEC_PTR]], [[ADD_PTR]]
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]]
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; CHECK: for.end.loopexit:
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; CHECK-NEXT: br label [[FOR_END]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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%idx.trunc = trunc i32 %n to i8
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%add.ptr = getelementptr inbounds i8, i8 addrspace(2)* %base, i8 %idx.trunc
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%cmp1 = icmp ult i8 addrspace(2)* %base, %add.ptr
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br i1 %cmp1, label %for.body, label %for.end
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; Make sure the added GEP has the right index type
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for.body:
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%p.02 = phi i8 addrspace(2)* [ %base, %entry ], [ %incdec.ptr, %for.body ]
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; cruft to make the IV useful
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%sub.ptr.lhs.cast = ptrtoint i8 addrspace(2)* %p.02 to i8
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%sub.ptr.rhs.cast = ptrtoint i8 addrspace(2)* %base to i8
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%sub.ptr.sub = sub i8 %sub.ptr.lhs.cast, %sub.ptr.rhs.cast
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store i8 %sub.ptr.sub, i8 addrspace(2)* %p.02
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%incdec.ptr = getelementptr inbounds i8, i8 addrspace(2)* %p.02, i32 1
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%cmp = icmp ult i8 addrspace(2)* %incdec.ptr, %add.ptr
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br i1 %cmp, label %for.body, label %for.end
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for.end:
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ret void
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}
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define void @ptriv_as3(i8 addrspace(3)* %base, i32 %n) nounwind {
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; CHECK-LABEL: @ptriv_as3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[IDX_TRUNC:%.*]] = trunc i32 [[N:%.*]] to i16
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; CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr inbounds i8, i8 addrspace(3)* [[BASE:%.*]], i16 [[IDX_TRUNC]]
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i8 addrspace(3)* [[BASE]], [[ADD_PTR]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_END:%.*]]
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; CHECK: for.body.preheader:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[P_02:%.*]] = phi i8 addrspace(3)* [ [[INCDEC_PTR:%.*]], [[FOR_BODY]] ], [ [[BASE]], [[FOR_BODY_PREHEADER]] ]
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; CHECK-NEXT: [[SUB_PTR_LHS_CAST:%.*]] = ptrtoint i8 addrspace(3)* [[P_02]] to i16
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; CHECK-NEXT: [[SUB_PTR_RHS_CAST:%.*]] = ptrtoint i8 addrspace(3)* [[BASE]] to i16
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; CHECK-NEXT: [[SUB_PTR_SUB:%.*]] = sub i16 [[SUB_PTR_LHS_CAST]], [[SUB_PTR_RHS_CAST]]
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; CHECK-NEXT: [[CONV:%.*]] = trunc i16 [[SUB_PTR_SUB]] to i8
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; CHECK-NEXT: store i8 [[CONV]], i8 addrspace(3)* [[P_02]]
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; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, i8 addrspace(3)* [[P_02]], i32 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i8 addrspace(3)* [[INCDEC_PTR]], [[ADD_PTR]]
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT:%.*]]
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; CHECK: for.end.loopexit:
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; CHECK-NEXT: br label [[FOR_END]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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%idx.trunc = trunc i32 %n to i16
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%add.ptr = getelementptr inbounds i8, i8 addrspace(3)* %base, i16 %idx.trunc
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%cmp1 = icmp ult i8 addrspace(3)* %base, %add.ptr
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br i1 %cmp1, label %for.body, label %for.end
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; Make sure the added GEP has the right index type
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for.body:
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%p.02 = phi i8 addrspace(3)* [ %base, %entry ], [ %incdec.ptr, %for.body ]
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; cruft to make the IV useful
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%sub.ptr.lhs.cast = ptrtoint i8 addrspace(3)* %p.02 to i16
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%sub.ptr.rhs.cast = ptrtoint i8 addrspace(3)* %base to i16
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%sub.ptr.sub = sub i16 %sub.ptr.lhs.cast, %sub.ptr.rhs.cast
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%conv = trunc i16 %sub.ptr.sub to i8
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store i8 %conv, i8 addrspace(3)* %p.02
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%incdec.ptr = getelementptr inbounds i8, i8 addrspace(3)* %p.02, i32 1
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%cmp = icmp ult i8 addrspace(3)* %incdec.ptr, %add.ptr
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br i1 %cmp, label %for.body, label %for.end
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for.end:
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ret void
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}
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