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InferAddressSpaces: Fix broken casting of constants
llvm-svn: 293718
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13a90f6e77
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1c088e86a3
@ -675,10 +675,15 @@ static bool handleMemIntrinsicPtrUse(MemIntrinsic *MI,
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// \p returns true if it is OK to change the address space of constant \p C with
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// a ConstantExpr addrspacecast.
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bool InferAddressSpaces::isSafeToCastConstAddrSpace(Constant *C, unsigned NewAS) const {
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if (C->getType()->getPointerAddressSpace() == NewAS)
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unsigned SrcAS = C->getType()->getPointerAddressSpace();
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if (SrcAS == NewAS || isa<UndefValue>(C))
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return true;
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if (isa<UndefValue>(C) || isa<ConstantPointerNull>(C))
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// Prevent illegal casts between different non-flat address spaces.
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if (SrcAS != FlatAddrSpace && NewAS != FlatAddrSpace)
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return false;
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if (isa<ConstantPointerNull>(C))
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return true;
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if (auto *Op = dyn_cast<Operator>(C)) {
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@ -78,13 +78,22 @@ define i1 @icmp_group_flat_cmp_constant_inttoptr(i32 addrspace(3)* %group.ptr.0)
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}
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; CHECK-LABEL: @icmp_mismatch_flat_group_private_cmp_null(
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; CHECK: %cmp = icmp eq i32 addrspace(3)* %group.ptr.0, addrspacecast (i32* null to i32 addrspace(3)*)
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; CHECK: %1 = addrspacecast i32 addrspace(3)* %group.ptr.0 to i32 addrspace(4)*
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; CHECK: %cmp = icmp eq i32 addrspace(4)* %1, addrspacecast (i32* null to i32 addrspace(4)*)
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define i1 @icmp_mismatch_flat_group_private_cmp_null(i32 addrspace(3)* %group.ptr.0) #0 {
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%cast0 = addrspacecast i32 addrspace(3)* %group.ptr.0 to i32 addrspace(4)*
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%cmp = icmp eq i32 addrspace(4)* %cast0, addrspacecast (i32* null to i32 addrspace(4)*)
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ret i1 %cmp
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}
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; CHECK-LABEL: @icmp_mismatch_flat_group_private_cmp_undef(
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; CHECK: %cmp = icmp eq i32 addrspace(3)* %group.ptr.0, undef
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define i1 @icmp_mismatch_flat_group_private_cmp_undef(i32 addrspace(3)* %group.ptr.0) #0 {
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%cast0 = addrspacecast i32 addrspace(3)* %group.ptr.0 to i32 addrspace(4)*
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%cmp = icmp eq i32 addrspace(4)* %cast0, addrspacecast (i32* undef to i32 addrspace(4)*)
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ret i1 %cmp
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}
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@lds0 = internal addrspace(3) global i32 0, align 4
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@global0 = internal addrspace(1) global i32 0, align 4
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@ -114,7 +123,8 @@ define i1 @icmp_group_flat_cmp_undef(i32 addrspace(3)* %group.ptr.0) #0 {
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; Test non-canonical orders
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; CHECK-LABEL: @icmp_mismatch_flat_group_private_cmp_null_swap(
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; CHECK: %cmp = icmp eq i32 addrspace(3)* addrspacecast (i32* null to i32 addrspace(3)*), %group.ptr.0
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; CHECK: %1 = addrspacecast i32 addrspace(3)* %group.ptr.0 to i32 addrspace(4)*
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; CHECK: %cmp = icmp eq i32 addrspace(4)* addrspacecast (i32* null to i32 addrspace(4)*), %1
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define i1 @icmp_mismatch_flat_group_private_cmp_null_swap(i32 addrspace(3)* %group.ptr.0) #0 {
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%cast0 = addrspacecast i32 addrspace(3)* %group.ptr.0 to i32 addrspace(4)*
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%cmp = icmp eq i32 addrspace(4)* addrspacecast (i32* null to i32 addrspace(4)*), %cast0
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@ -129,6 +139,14 @@ define i1 @icmp_group_flat_cmp_undef_swap(i32 addrspace(3)* %group.ptr.0) #0 {
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ret i1 %cmp
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}
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; CHECK-LABEL: @icmp_mismatch_flat_group_private_cmp_undef_swap(
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; CHECK: %cmp = icmp eq i32 addrspace(3)* undef, %group.ptr.0
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define i1 @icmp_mismatch_flat_group_private_cmp_undef_swap(i32 addrspace(3)* %group.ptr.0) #0 {
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%cast0 = addrspacecast i32 addrspace(3)* %group.ptr.0 to i32 addrspace(4)*
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%cmp = icmp eq i32 addrspace(4)* addrspacecast (i32* undef to i32 addrspace(4)*), %cast0
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ret i1 %cmp
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}
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; TODO: Should be handled
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; CHECK-LABEL: @icmp_flat_flat_from_group_vector(
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; CHECK: %cmp = icmp eq <2 x i32 addrspace(4)*> %cast0, %cast1
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