e6ad9ef4e7
The basic idea to this is that a) having a single canonical type makes CSE easier, and b) many of our transforms are inconsistent about which types we end up with based on visit order. I'm restricting this to constants as for non-constants, we'd have to decide whether the simplicity was worth extra instructions. For constants, there are no extra instructions. We chose the canonical type as i64 arbitrarily. We might consider changing this to something else in the future if we have cause. Differential Revision: https://reviews.llvm.org/D115387
140 lines
5.2 KiB
LLVM
140 lines
5.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -instcombine %s -o - | 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-p4:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32"
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define i32 @test_as0(i32 addrspace(0)* %a) {
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; CHECK-LABEL: @test_as0(
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr i32, i32* [[A:%.*]], i32 1
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; CHECK-NEXT: [[Y:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%arrayidx = getelementptr i32, i32 addrspace(0)* %a, i64 1
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%y = load i32, i32 addrspace(0)* %arrayidx, align 4
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ret i32 %y
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}
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define i32 @test_as1(i32 addrspace(1)* %a) {
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; CHECK-LABEL: @test_as1(
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr i32, i32 addrspace(1)* [[A:%.*]], i64 1
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; CHECK-NEXT: [[Y:%.*]] = load i32, i32 addrspace(1)* [[ARRAYIDX]], align 4
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%arrayidx = getelementptr i32, i32 addrspace(1)* %a, i32 1
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%y = load i32, i32 addrspace(1)* %arrayidx, align 4
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ret i32 %y
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}
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define i32 @test_as2(i32 addrspace(2)* %a) {
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; CHECK-LABEL: @test_as2(
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr i32, i32 addrspace(2)* [[A:%.*]], i8 1
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; CHECK-NEXT: [[Y:%.*]] = load i32, i32 addrspace(2)* [[ARRAYIDX]], align 4
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%arrayidx = getelementptr i32, i32 addrspace(2)* %a, i32 1
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%y = load i32, i32 addrspace(2)* %arrayidx, align 4
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ret i32 %y
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}
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define i32 @test_as3(i32 addrspace(3)* %a) {
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; CHECK-LABEL: @test_as3(
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr i32, i32 addrspace(3)* [[A:%.*]], i16 1
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; CHECK-NEXT: [[Y:%.*]] = load i32, i32 addrspace(3)* [[ARRAYIDX]], align 4
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%arrayidx = getelementptr i32, i32 addrspace(3)* %a, i32 1
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%y = load i32, i32 addrspace(3)* %arrayidx, align 4
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ret i32 %y
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}
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define i32 @test_combine_ptrtoint(i32 addrspace(2)* %a) {
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; CHECK-LABEL: @test_combine_ptrtoint(
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; CHECK-NEXT: [[Y:%.*]] = load i32, i32 addrspace(2)* [[A:%.*]], align 4
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%cast = ptrtoint i32 addrspace(2)* %a to i8
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%castback = inttoptr i8 %cast to i32 addrspace(2)*
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%y = load i32, i32 addrspace(2)* %castback, align 4
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ret i32 %y
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}
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define i8 @test_combine_inttoptr(i8 %a) {
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; CHECK-LABEL: @test_combine_inttoptr(
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; CHECK-NEXT: ret i8 [[A:%.*]]
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;
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%cast = inttoptr i8 %a to i32 addrspace(2)*
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%castback = ptrtoint i32 addrspace(2)* %cast to i8
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ret i8 %castback
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}
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define i32 @test_combine_vector_ptrtoint(<2 x i32 addrspace(2)*> %a) {
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; CHECK-LABEL: @test_combine_vector_ptrtoint(
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; CHECK-NEXT: [[P:%.*]] = extractelement <2 x i32 addrspace(2)*> [[A:%.*]], i64 0
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; CHECK-NEXT: [[Y:%.*]] = load i32, i32 addrspace(2)* [[P]], align 4
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%cast = ptrtoint <2 x i32 addrspace(2)*> %a to <2 x i8>
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%castback = inttoptr <2 x i8> %cast to <2 x i32 addrspace(2)*>
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%p = extractelement <2 x i32 addrspace(2)*> %castback, i32 0
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%y = load i32, i32 addrspace(2)* %p, align 4
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ret i32 %y
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}
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define <2 x i8> @test_combine_vector_inttoptr(<2 x i8> %a) {
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; CHECK-LABEL: @test_combine_vector_inttoptr(
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; CHECK-NEXT: ret <2 x i8> [[A:%.*]]
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;
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%cast = inttoptr <2 x i8> %a to <2 x i32 addrspace(2)*>
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%castback = ptrtoint <2 x i32 addrspace(2)*> %cast to <2 x i8>
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ret <2 x i8> %castback
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}
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; Check that the GEP index is changed to the address space integer type (i64 -> i8)
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define i32 addrspace(2)* @shrink_gep_constant_index_64_as2(i32 addrspace(2)* %p) {
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; CHECK-LABEL: @shrink_gep_constant_index_64_as2(
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; CHECK-NEXT: [[RET:%.*]] = getelementptr i32, i32 addrspace(2)* [[P:%.*]], i8 1
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; CHECK-NEXT: ret i32 addrspace(2)* [[RET]]
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;
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%ret = getelementptr i32, i32 addrspace(2)* %p, i64 1
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ret i32 addrspace(2)* %ret
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}
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define i32 addrspace(2)* @shrink_gep_constant_index_32_as2(i32 addrspace(2)* %p) {
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; CHECK-LABEL: @shrink_gep_constant_index_32_as2(
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; CHECK-NEXT: [[RET:%.*]] = getelementptr i32, i32 addrspace(2)* [[P:%.*]], i8 1
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; CHECK-NEXT: ret i32 addrspace(2)* [[RET]]
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;
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%ret = getelementptr i32, i32 addrspace(2)* %p, i32 1
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ret i32 addrspace(2)* %ret
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}
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define i32 addrspace(3)* @shrink_gep_constant_index_64_as3(i32 addrspace(3)* %p) {
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; CHECK-LABEL: @shrink_gep_constant_index_64_as3(
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; CHECK-NEXT: [[RET:%.*]] = getelementptr i32, i32 addrspace(3)* [[P:%.*]], i16 1
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; CHECK-NEXT: ret i32 addrspace(3)* [[RET]]
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;
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%ret = getelementptr i32, i32 addrspace(3)* %p, i64 1
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ret i32 addrspace(3)* %ret
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}
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define i32 addrspace(2)* @shrink_gep_variable_index_64_as2(i32 addrspace(2)* %p, i64 %idx) {
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; CHECK-LABEL: @shrink_gep_variable_index_64_as2(
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[IDX:%.*]] to i8
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; CHECK-NEXT: [[RET:%.*]] = getelementptr i32, i32 addrspace(2)* [[P:%.*]], i8 [[TMP1]]
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; CHECK-NEXT: ret i32 addrspace(2)* [[RET]]
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;
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%ret = getelementptr i32, i32 addrspace(2)* %p, i64 %idx
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ret i32 addrspace(2)* %ret
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}
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define i32 addrspace(1)* @grow_gep_variable_index_8_as1(i32 addrspace(1)* %p, i8 %idx) {
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; CHECK-LABEL: @grow_gep_variable_index_8_as1(
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; CHECK-NEXT: [[TMP1:%.*]] = sext i8 [[IDX:%.*]] to i64
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; CHECK-NEXT: [[RET:%.*]] = getelementptr i32, i32 addrspace(1)* [[P:%.*]], i64 [[TMP1]]
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; CHECK-NEXT: ret i32 addrspace(1)* [[RET]]
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;
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%ret = getelementptr i32, i32 addrspace(1)* %p, i8 %idx
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ret i32 addrspace(1)* %ret
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}
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