94 lines
3.0 KiB
LLVM
94 lines
3.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -instcombine -S -disable-i2p-p2i-opt < %s | FileCheck %s
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target datalayout = "e-p:64:64-p1:16:16-p2:32:32:32-p3:64:64:64"
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target triple = "x86_64-unknown-linux-gnu"
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; icmp (inttoptr (ptrtoint p1)), p2 --> icmp p1, p2.
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define i1 @func(i8* %X, i8* %Y) {
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; CHECK-LABEL: @func(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8* [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%i = ptrtoint i8* %X to i64
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%p = inttoptr i64 %i to i8*
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%cmp = icmp eq i8* %p, %Y
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ret i1 %cmp
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}
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define i1 @func_pointer_different_types(i16* %X, i8* %Y) {
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; CHECK-LABEL: @func_pointer_different_types(
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast i16* [[X:%.*]] to i8*
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8* [[TMP1]], [[Y:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%i = ptrtoint i16* %X to i64
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%p = inttoptr i64 %i to i8*
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%cmp = icmp eq i8* %p, %Y
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ret i1 %cmp
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}
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declare i8* @gen8ptr()
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define i1 @func_commutative(i16* %X) {
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; CHECK-LABEL: @func_commutative(
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; CHECK-NEXT: [[Y:%.*]] = call i8* @gen8ptr()
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast i16* [[X:%.*]] to i8*
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8* [[Y]], [[TMP1]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%Y = call i8* @gen8ptr() ; thwart complexity-based canonicalization
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%i = ptrtoint i16* %X to i64
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%p = inttoptr i64 %i to i8*
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%cmp = icmp eq i8* %Y, %p
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ret i1 %cmp
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}
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; Negative test - Wrong Integer type.
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define i1 @func_integer_type_too_small(i16* %X, i8* %Y) {
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; CHECK-LABEL: @func_integer_type_too_small(
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; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint i16* [[X:%.*]] to i64
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; CHECK-NEXT: [[TMP2:%.*]] = and i64 [[TMP1]], 4294967295
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; CHECK-NEXT: [[P:%.*]] = inttoptr i64 [[TMP2]] to i8*
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8* [[P]], [[Y:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%i = ptrtoint i16* %X to i32
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%p = inttoptr i32 %i to i8*
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%cmp = icmp eq i8* %Y, %p
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ret i1 %cmp
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}
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; Negative test - Pointers in different address space
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define i1 @func_ptr_different_addrspace(i8* %X, i16 addrspace(3)* %Y){
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; CHECK-LABEL: @func_ptr_different_addrspace(
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; CHECK-NEXT: [[I:%.*]] = ptrtoint i8* [[X:%.*]] to i64
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; CHECK-NEXT: [[P:%.*]] = inttoptr i64 [[I]] to i16 addrspace(3)*
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i16 addrspace(3)* [[P]], [[Y:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%i = ptrtoint i8* %X to i64
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%p = inttoptr i64 %i to i16 addrspace(3)*
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%cmp = icmp eq i16 addrspace(3)* %Y, %p
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ret i1 %cmp
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}
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; Negative test - Pointers in different address space
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define i1 @func_ptr_different_addrspace1(i8 addrspace(2)* %X, i16* %Y){
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; CHECK-LABEL: @func_ptr_different_addrspace1(
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; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint i8 addrspace(2)* [[X:%.*]] to i32
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; CHECK-NEXT: [[I:%.*]] = zext i32 [[TMP1]] to i64
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; CHECK-NEXT: [[P:%.*]] = inttoptr i64 [[I]] to i16*
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i16* [[P]], [[Y:%.*]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%i = ptrtoint i8 addrspace(2)* %X to i64
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%p = inttoptr i64 %i to i16*
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%cmp = icmp eq i16* %Y, %p
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ret i1 %cmp
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}
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