derek.holloway
7502bf64a4
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41 lines
1.6 KiB
LLVM
41 lines
1.6 KiB
LLVM
; RUN: opt -passes=instcombine -S < %s | FileCheck %s
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; Verify that foldIntegerTypedPHI does not crash when a phi incoming value
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; is a ptrtoint from a different address space than the inttoptr user targets.
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define float @phi_ptrtoint_different_addrspace(ptr addrspace(1) noundef %ptr, i1 %cond) {
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; CHECK-LABEL: @phi_ptrtoint_different_addrspace(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[ALLOCA:%.*]] = alloca ptr addrspace(1), align 8, addrspace(4)
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; CHECK-NEXT: [[PTR_INT:%.*]] = ptrtoint ptr addrspace(1) [[PTR:%.*]] to i64
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[PHI:%.*]] = phi i64 [ [[PTR_INT]], [[ENTRY:%.*]] ], [ [[ALLOCA_INT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[LOOP_LATCH]], label [[EXIT:%.*]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[ALLOCA_INT]] = ptrtoint ptr addrspace(4) [[ALLOCA]] to i64
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; CHECK-NEXT: br label [[LOOP]]
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; CHECK: exit:
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; CHECK-NEXT: [[PHI_PTR:%.*]] = inttoptr i64 [[PHI]] to ptr addrspace(1)
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; CHECK-NEXT: [[VAL:%.*]] = load float, ptr addrspace(1) [[PHI_PTR]], align 4
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; CHECK-NEXT: ret float [[VAL]]
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;
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entry:
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%alloca = alloca ptr addrspace(1), align 8, addrspace(4)
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%ptr.int = ptrtoint ptr addrspace(1) %ptr to i64
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br label %loop
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loop:
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%phi = phi i64 [ %ptr.int, %entry ], [ %alloca.int, %loop.latch ]
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br i1 %cond, label %loop.latch, label %exit
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loop.latch:
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%alloca.int = ptrtoint ptr addrspace(4) %alloca to i64
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br label %loop
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exit:
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%phi.ptr = inttoptr i64 %phi to ptr addrspace(1)
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%val = load float, ptr addrspace(1) %phi.ptr, align 4
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ret float %val
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}
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