d10b76552f
The data-layout independent constant folding currently has some rather gnarly code for canonicalizing GEP indices to reduce "notional overindexing", and then infers inbounds based on that canonicalization. Now that we canonicalize to i8 GEPs, this canonicalization is essentially useless, as we'll discard it as soon as the GEP hits the data-layout aware constant folder anyway. As such, I'd like to remove this code entirely. This shouldn't have any impact on optimization capabilities.
148 lines
6.2 KiB
LLVM
148 lines
6.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=instcombine %s -S | FileCheck %s
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@block = global [64 x [8192 x i8]] zeroinitializer, align 1
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define <2 x ptr> @vectorindex1() {
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; CHECK-LABEL: @vectorindex1(
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; CHECK-NEXT: ret <2 x ptr> getelementptr inbounds ([64 x [8192 x i8]], ptr @block, <2 x i64> zeroinitializer, <2 x i64> <i64 0, i64 1>, <2 x i64> <i64 8192, i64 8192>)
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;
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%1 = getelementptr inbounds [64 x [8192 x i8]], ptr @block, i64 0, <2 x i64> <i64 0, i64 1>, i64 8192
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ret <2 x ptr> %1
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}
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define <2 x ptr> @vectorindex2() {
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; CHECK-LABEL: @vectorindex2(
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; CHECK-NEXT: ret <2 x ptr> getelementptr inbounds ([64 x [8192 x i8]], ptr @block, <2 x i64> zeroinitializer, <2 x i64> <i64 1, i64 1>, <2 x i64> <i64 8191, i64 8193>)
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;
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%1 = getelementptr inbounds [64 x [8192 x i8]], ptr @block, i64 0, i64 1, <2 x i64> <i64 8191, i64 8193>
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ret <2 x ptr> %1
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}
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define <2 x ptr> @vectorindex3() {
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; CHECK-LABEL: @vectorindex3(
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; CHECK-NEXT: ret <2 x ptr> getelementptr inbounds ([64 x [8192 x i8]], ptr @block, <2 x i64> zeroinitializer, <2 x i64> <i64 0, i64 1>, <2 x i64> <i64 8191, i64 8193>)
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;
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%1 = getelementptr inbounds [64 x [8192 x i8]], ptr @block, i64 0, <2 x i64> <i64 0, i64 1>, <2 x i64> <i64 8191, i64 8193>
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ret <2 x ptr> %1
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}
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; Negative test - datalayout's alloc size for the 2 types must match.
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define ptr @bitcast_vec_to_array_gep(ptr %x, i64 %y, i64 %z) {
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; CHECK-LABEL: @bitcast_vec_to_array_gep(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr [7 x i32], ptr [[X:%.*]], i64 [[Y:%.*]], i64 [[Z:%.*]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%gep = getelementptr [7 x i32], ptr %x, i64 %y, i64 %z
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ret ptr %gep
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}
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; Negative test - datalayout's alloc size for the 2 types must match.
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define ptr @bitcast_array_to_vec_gep(ptr %x, i64 %y, i64 %z) {
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; CHECK-LABEL: @bitcast_array_to_vec_gep(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds <3 x i32>, ptr [[X:%.*]], i64 [[Y:%.*]], i64 [[Z:%.*]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%gep = getelementptr inbounds <3 x i32>, ptr %x, i64 %y, i64 %z
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ret ptr %gep
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}
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; Sizes and types match - safe to remove bitcast.
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define ptr @bitcast_vec_to_array_gep_matching_alloc_size(ptr %x, i64 %y, i64 %z) {
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; CHECK-LABEL: @bitcast_vec_to_array_gep_matching_alloc_size(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr [4 x i32], ptr [[X:%.*]], i64 [[Y:%.*]], i64 [[Z:%.*]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%gep = getelementptr [4 x i32], ptr %x, i64 %y, i64 %z
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ret ptr %gep
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}
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; Sizes and types match - safe to remove bitcast.
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define ptr @bitcast_array_to_vec_gep_matching_alloc_size(ptr %x, i64 %y, i64 %z) {
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; CHECK-LABEL: @bitcast_array_to_vec_gep_matching_alloc_size(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds <4 x i32>, ptr [[X:%.*]], i64 [[Y:%.*]], i64 [[Z:%.*]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%gep = getelementptr inbounds <4 x i32>, ptr %x, i64 %y, i64 %z
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ret ptr %gep
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}
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; Negative test - datalayout's alloc size for the 2 types must match.
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define ptr addrspace(3) @bitcast_vec_to_array_addrspace(ptr %x, i64 %y, i64 %z) {
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; CHECK-LABEL: @bitcast_vec_to_array_addrspace(
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; CHECK-NEXT: [[ASC:%.*]] = addrspacecast ptr [[X:%.*]] to ptr addrspace(3)
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr [7 x i32], ptr addrspace(3) [[ASC]], i64 [[Y:%.*]], i64 [[Z:%.*]]
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; CHECK-NEXT: ret ptr addrspace(3) [[GEP]]
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;
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%asc = addrspacecast ptr %x to ptr addrspace(3)
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%gep = getelementptr [7 x i32], ptr addrspace(3) %asc, i64 %y, i64 %z
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ret ptr addrspace(3) %gep
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}
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; Negative test - datalayout's alloc size for the 2 types must match.
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define ptr addrspace(3) @inbounds_bitcast_vec_to_array_addrspace(ptr %x, i64 %y, i64 %z) {
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; CHECK-LABEL: @inbounds_bitcast_vec_to_array_addrspace(
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; CHECK-NEXT: [[ASC:%.*]] = addrspacecast ptr [[X:%.*]] to ptr addrspace(3)
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [7 x i32], ptr addrspace(3) [[ASC]], i64 [[Y:%.*]], i64 [[Z:%.*]]
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; CHECK-NEXT: ret ptr addrspace(3) [[GEP]]
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;
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%asc = addrspacecast ptr %x to ptr addrspace(3)
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%gep = getelementptr inbounds [7 x i32], ptr addrspace(3) %asc, i64 %y, i64 %z
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ret ptr addrspace(3) %gep
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}
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; Sizes and types match - safe to remove bitcast.
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define ptr addrspace(3) @bitcast_vec_to_array_addrspace_matching_alloc_size(ptr %x, i64 %y, i64 %z) {
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; CHECK-LABEL: @bitcast_vec_to_array_addrspace_matching_alloc_size(
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; CHECK-NEXT: [[ASC:%.*]] = addrspacecast ptr [[X:%.*]] to ptr addrspace(3)
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr [4 x i32], ptr addrspace(3) [[ASC]], i64 [[Y:%.*]], i64 [[Z:%.*]]
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; CHECK-NEXT: ret ptr addrspace(3) [[GEP]]
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;
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%asc = addrspacecast ptr %x to ptr addrspace(3)
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%gep = getelementptr [4 x i32], ptr addrspace(3) %asc, i64 %y, i64 %z
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ret ptr addrspace(3) %gep
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}
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; Sizes and types match - safe to remove bitcast.
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define ptr addrspace(3) @inbounds_bitcast_vec_to_array_addrspace_matching_alloc_size(ptr %x, i64 %y, i64 %z) {
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; CHECK-LABEL: @inbounds_bitcast_vec_to_array_addrspace_matching_alloc_size(
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; CHECK-NEXT: [[ASC:%.*]] = addrspacecast ptr [[X:%.*]] to ptr addrspace(3)
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [4 x i32], ptr addrspace(3) [[ASC]], i64 [[Y:%.*]], i64 [[Z:%.*]]
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; CHECK-NEXT: ret ptr addrspace(3) [[GEP]]
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;
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%asc = addrspacecast ptr %x to ptr addrspace(3)
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%gep = getelementptr inbounds [4 x i32], ptr addrspace(3) %asc, i64 %y, i64 %z
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ret ptr addrspace(3) %gep
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}
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; Negative test - avoid doing bitcast on ptr, because '16' should be scaled by 'vscale'.
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define ptr @test_accumulate_constant_offset_vscale_nonzero(<vscale x 16 x i1> %pg, ptr %base) {
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; CHECK-LABEL: @test_accumulate_constant_offset_vscale_nonzero(
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; CHECK-NEXT: [[TMP1:%.*]] = call i64 @llvm.vscale.i64()
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; CHECK-NEXT: [[TMP2:%.*]] = shl i64 [[TMP1]], 4
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; CHECK-NEXT: [[GEP_OFFS:%.*]] = or disjoint i64 [[TMP2]], 4
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[BASE:%.*]], i64 [[GEP_OFFS]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%gep = getelementptr <vscale x 16 x i8>, ptr %base, i64 1, i64 4
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ret ptr %gep
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}
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define ptr @test_accumulate_constant_offset_vscale_zero(<vscale x 16 x i1> %pg, ptr %base) {
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; CHECK-LABEL: @test_accumulate_constant_offset_vscale_zero(
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[BASE:%.*]], i64 4
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%gep = getelementptr <vscale x 16 x i8>, ptr %base, i64 0, i64 4
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ret ptr %gep
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}
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