6c7fd723c4
With the semantics change from D154051, it is no longer valid to fold gep inbounds undef to poison (unless we know the index is non-zero). Fold it to undef instead. Differential Revision: https://reviews.llvm.org/D154215
361 lines
12 KiB
LLVM
361 lines
12 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=instsimplify < %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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%struct.A = type { [7 x i8] }
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define ptr @test1(ptr %b, ptr %e) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[E_PTR:%.*]] = ptrtoint ptr [[E:%.*]] to i64
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; CHECK-NEXT: [[B_PTR:%.*]] = ptrtoint ptr [[B:%.*]] to i64
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[E_PTR]], [[B_PTR]]
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; CHECK-NEXT: [[SDIV:%.*]] = sdiv exact i64 [[SUB]], 7
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[STRUCT_A:%.*]], ptr [[B]], i64 [[SDIV]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%e_ptr = ptrtoint ptr %e to i64
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%b_ptr = ptrtoint ptr %b to i64
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%sub = sub i64 %e_ptr, %b_ptr
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%sdiv = sdiv exact i64 %sub, 7
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%gep = getelementptr inbounds %struct.A, ptr %b, i64 %sdiv
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ret ptr %gep
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}
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define ptr @test2(ptr %b, ptr %e) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[E_PTR:%.*]] = ptrtoint ptr [[E:%.*]] to i64
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; CHECK-NEXT: [[B_PTR:%.*]] = ptrtoint ptr [[B:%.*]] to i64
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[E_PTR]], [[B_PTR]]
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[B]], i64 [[SUB]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%e_ptr = ptrtoint ptr %e to i64
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%b_ptr = ptrtoint ptr %b to i64
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%sub = sub i64 %e_ptr, %b_ptr
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%gep = getelementptr inbounds i8, ptr %b, i64 %sub
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ret ptr %gep
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}
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define ptr @test3(ptr %b, ptr %e) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[E_PTR:%.*]] = ptrtoint ptr [[E:%.*]] to i64
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; CHECK-NEXT: [[B_PTR:%.*]] = ptrtoint ptr [[B:%.*]] to i64
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[E_PTR]], [[B_PTR]]
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; CHECK-NEXT: [[ASHR:%.*]] = ashr exact i64 [[SUB]], 3
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i64, ptr [[B]], i64 [[ASHR]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%e_ptr = ptrtoint ptr %e to i64
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%b_ptr = ptrtoint ptr %b to i64
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%sub = sub i64 %e_ptr, %b_ptr
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%ashr = ashr exact i64 %sub, 3
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%gep = getelementptr inbounds i64, ptr %b, i64 %ashr
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ret ptr %gep
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}
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; The following tests should not be folded to null, because this would
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; lose provenance of the base pointer %b.
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define ptr @test4(ptr %b) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[B_PTR:%.*]] = ptrtoint ptr [[B:%.*]] to i64
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[B_PTR]]
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; CHECK-NEXT: [[SDIV:%.*]] = sdiv exact i64 [[SUB]], 7
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr [[STRUCT_A:%.*]], ptr [[B]], i64 [[SDIV]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%b_ptr = ptrtoint ptr %b to i64
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%sub = sub i64 0, %b_ptr
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%sdiv = sdiv exact i64 %sub, 7
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%gep = getelementptr %struct.A, ptr %b, i64 %sdiv
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ret ptr %gep
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}
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define ptr @test4_inbounds(ptr %b) {
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; CHECK-LABEL: @test4_inbounds(
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; CHECK-NEXT: [[B_PTR:%.*]] = ptrtoint ptr [[B:%.*]] to i64
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[B_PTR]]
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; CHECK-NEXT: [[SDIV:%.*]] = sdiv exact i64 [[SUB]], 7
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[STRUCT_A:%.*]], ptr [[B]], i64 [[SDIV]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%b_ptr = ptrtoint ptr %b to i64
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%sub = sub i64 0, %b_ptr
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%sdiv = sdiv exact i64 %sub, 7
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%gep = getelementptr inbounds %struct.A, ptr %b, i64 %sdiv
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ret ptr %gep
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}
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define ptr @test5(ptr %b) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[B_PTR:%.*]] = ptrtoint ptr [[B:%.*]] to i64
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[B_PTR]]
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[B]], i64 [[SUB]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%b_ptr = ptrtoint ptr %b to i64
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%sub = sub i64 0, %b_ptr
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%gep = getelementptr i8, ptr %b, i64 %sub
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ret ptr %gep
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}
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define ptr @test5_inbounds(ptr %b) {
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; CHECK-LABEL: @test5_inbounds(
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; CHECK-NEXT: [[B_PTR:%.*]] = ptrtoint ptr [[B:%.*]] to i64
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[B_PTR]]
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[B]], i64 [[SUB]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%b_ptr = ptrtoint ptr %b to i64
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%sub = sub i64 0, %b_ptr
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%gep = getelementptr inbounds i8, ptr %b, i64 %sub
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ret ptr %gep
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}
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define ptr @test6(ptr %b) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: [[B_PTR:%.*]] = ptrtoint ptr [[B:%.*]] to i64
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[B_PTR]]
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; CHECK-NEXT: [[ASHR:%.*]] = ashr exact i64 [[SUB]], 3
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i64, ptr [[B]], i64 [[ASHR]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%b_ptr = ptrtoint ptr %b to i64
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%sub = sub i64 0, %b_ptr
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%ashr = ashr exact i64 %sub, 3
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%gep = getelementptr i64, ptr %b, i64 %ashr
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ret ptr %gep
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}
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define ptr @test6_inbounds(ptr %b) {
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; CHECK-LABEL: @test6_inbounds(
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; CHECK-NEXT: [[B_PTR:%.*]] = ptrtoint ptr [[B:%.*]] to i64
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[B_PTR]]
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; CHECK-NEXT: [[ASHR:%.*]] = ashr exact i64 [[SUB]], 3
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i64, ptr [[B]], i64 [[ASHR]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%b_ptr = ptrtoint ptr %b to i64
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%sub = sub i64 0, %b_ptr
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%ashr = ashr exact i64 %sub, 3
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%gep = getelementptr inbounds i64, ptr %b, i64 %ashr
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ret ptr %gep
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}
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define ptr @test7(ptr %b, ptr %e) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: [[E_PTR:%.*]] = ptrtoint ptr [[E:%.*]] to i64
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; CHECK-NEXT: [[B_PTR:%.*]] = ptrtoint ptr [[B:%.*]] to i64
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; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[E_PTR]], [[B_PTR]]
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[B]], i64 [[SUB]]
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; CHECK-NEXT: ret ptr [[GEP]]
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;
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%e_ptr = ptrtoint ptr %e to i64
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%b_ptr = ptrtoint ptr %b to i64
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%sub = sub i64 %e_ptr, %b_ptr
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%gep = getelementptr inbounds i8, ptr %b, i64 %sub
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ret ptr %gep
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}
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define ptr @undef_inbounds_var_idx(i64 %idx) {
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; CHECK-LABEL: @undef_inbounds_var_idx(
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; CHECK-NEXT: ret ptr undef
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;
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%el = getelementptr inbounds i64, ptr undef, i64 %idx
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ret ptr %el
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}
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define ptr @undef_no_inbounds_var_idx(i64 %idx) {
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; CHECK-LABEL: @undef_no_inbounds_var_idx(
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; CHECK-NEXT: ret ptr undef
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;
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%el = getelementptr i64, ptr undef, i64 %idx
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ret ptr %el
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}
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define <8 x ptr> @undef_vec1() {
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; CHECK-LABEL: @undef_vec1(
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; CHECK-NEXT: ret <8 x ptr> undef
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;
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%el = getelementptr inbounds i64, ptr undef, <8 x i64> undef
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ret <8 x ptr> %el
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}
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define <8 x ptr> @undef_vec2() {
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; CHECK-LABEL: @undef_vec2(
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; CHECK-NEXT: ret <8 x ptr> undef
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;
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%el = getelementptr i64, <8 x ptr> undef, <8 x i64> undef
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ret <8 x ptr> %el
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}
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; Check ConstantExpr::getGetElementPtr() using ElementCount for size queries - begin.
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; Constant ptr
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define ptr @ptr_idx_scalar() {
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; CHECK-LABEL: @ptr_idx_scalar(
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; CHECK-NEXT: ret ptr inttoptr (i64 4 to ptr)
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;
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%gep = getelementptr <4 x i32>, ptr null, i64 0, i64 1
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ret ptr %gep
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}
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define <2 x ptr> @ptr_idx_vector() {
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; CHECK-LABEL: @ptr_idx_vector(
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; CHECK-NEXT: ret <2 x ptr> getelementptr (i32, ptr null, <2 x i64> <i64 1, i64 1>)
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;
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%gep = getelementptr i32, ptr null, <2 x i64> <i64 1, i64 1>
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ret <2 x ptr> %gep
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}
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define <4 x ptr> @ptr_idx_mix_scalar_vector(){
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; CHECK-LABEL: @ptr_idx_mix_scalar_vector(
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; CHECK-NEXT: ret <4 x ptr> getelementptr ([42 x [3 x i32]], ptr null, <4 x i64> zeroinitializer, <4 x i64> <i64 0, i64 1, i64 2, i64 3>, <4 x i64> zeroinitializer)
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;
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%gep = getelementptr [42 x [3 x i32]], ptr null, i64 0, <4 x i64> <i64 0, i64 1, i64 2, i64 3>, i64 0
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ret <4 x ptr> %gep
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}
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; Constant vector
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define <4 x ptr> @vector_idx_scalar() {
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; CHECK-LABEL: @vector_idx_scalar(
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; CHECK-NEXT: ret <4 x ptr> getelementptr (i32, <4 x ptr> zeroinitializer, <4 x i64> <i64 1, i64 1, i64 1, i64 1>)
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;
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%gep = getelementptr i32, <4 x ptr> zeroinitializer, i64 1
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ret <4 x ptr> %gep
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}
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define <4 x ptr> @vector_idx_vector() {
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; CHECK-LABEL: @vector_idx_vector(
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; CHECK-NEXT: ret <4 x ptr> getelementptr (i32, <4 x ptr> zeroinitializer, <4 x i64> <i64 1, i64 1, i64 1, i64 1>)
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;
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%gep = getelementptr i32, <4 x ptr> zeroinitializer, <4 x i64> <i64 1, i64 1, i64 1, i64 1>
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ret <4 x ptr> %gep
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}
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%struct = type { double, float }
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define <4 x ptr> @vector_idx_mix_scalar_vector() {
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; CHECK-LABEL: @vector_idx_mix_scalar_vector(
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; CHECK-NEXT: ret <4 x ptr> getelementptr ([[STRUCT:%.*]], <4 x ptr> zeroinitializer, <4 x i64> zeroinitializer, i32 1)
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;
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%gep = getelementptr %struct, <4 x ptr> zeroinitializer, i32 0, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
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ret <4 x ptr> %gep
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}
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; Constant scalable
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define <vscale x 4 x ptr> @scalable_idx_scalar() {
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; CHECK-LABEL: @scalable_idx_scalar(
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; CHECK-NEXT: ret <vscale x 4 x ptr> getelementptr (i32, <vscale x 4 x ptr> zeroinitializer, <vscale x 4 x i64> shufflevector (<vscale x 4 x i64> insertelement (<vscale x 4 x i64> poison, i64 1, i64 0), <vscale x 4 x i64> poison, <vscale x 4 x i32> zeroinitializer))
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;
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%gep = getelementptr i32, <vscale x 4 x ptr> zeroinitializer, i64 1
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ret <vscale x 4 x ptr> %gep
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}
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define <vscale x 4 x ptr> @scalable_vector_idx_mix_scalar_vector() {
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; CHECK-LABEL: @scalable_vector_idx_mix_scalar_vector(
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; CHECK-NEXT: ret <vscale x 4 x ptr> getelementptr ([[STRUCT:%.*]], <vscale x 4 x ptr> zeroinitializer, <vscale x 4 x i64> zeroinitializer, i32 1)
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;
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%gep = getelementptr %struct, <vscale x 4 x ptr> zeroinitializer, i32 0, i32 1
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ret <vscale x 4 x ptr> %gep
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}
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define <vscale x 2 x ptr> @ptr_idx_mix_scalar_scalable_vector() {
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; CHECK-LABEL: @ptr_idx_mix_scalar_scalable_vector(
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; CHECK-NEXT: ret <vscale x 2 x ptr> zeroinitializer
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;
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%v = getelementptr [2 x i64], ptr null, i64 0, <vscale x 2 x i64> zeroinitializer
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ret <vscale x 2 x ptr> %v
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}
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; Check ConstantExpr::getGetElementPtr() using ElementCount for size queries - end.
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define ptr @poison() {
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; CHECK-LABEL: @poison(
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; CHECK-NEXT: ret ptr poison
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;
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%v = getelementptr i8, ptr poison, i64 1
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ret ptr %v
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}
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define ptr @poison2(ptr %baseptr) {
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; CHECK-LABEL: @poison2(
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; CHECK-NEXT: ret ptr poison
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;
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%v = getelementptr i8, ptr %baseptr, i64 poison
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ret ptr %v
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}
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define ptr @D98611_1(ptr %c1, i64 %offset) {
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; CHECK-LABEL: @D98611_1(
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; CHECK-NEXT: [[C2:%.*]] = getelementptr inbounds i8, ptr [[C1:%.*]], i64 [[OFFSET:%.*]]
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; CHECK-NEXT: ret ptr [[C2]]
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;
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%c2 = getelementptr inbounds i8, ptr %c1, i64 %offset
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%ptrtoint1 = ptrtoint ptr %c1 to i64
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%ptrtoint2 = ptrtoint ptr %c2 to i64
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%sub = sub i64 %ptrtoint2, %ptrtoint1
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%gep = getelementptr inbounds i8, ptr %c1, i64 %sub
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ret ptr %gep
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}
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define ptr @D98611_2(ptr %c1, i64 %offset) {
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; CHECK-LABEL: @D98611_2(
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; CHECK-NEXT: [[C2:%.*]] = getelementptr inbounds [[STRUCT_A:%.*]], ptr [[C1:%.*]], i64 [[OFFSET:%.*]]
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; CHECK-NEXT: ret ptr [[C2]]
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;
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%c2 = getelementptr inbounds %struct.A, ptr %c1, i64 %offset
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%ptrtoint1 = ptrtoint ptr %c1 to i64
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%ptrtoint2 = ptrtoint ptr %c2 to i64
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%sub = sub i64 %ptrtoint2, %ptrtoint1
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%sdiv = sdiv exact i64 %sub, 7
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%gep = getelementptr inbounds %struct.A, ptr %c1, i64 %sdiv
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ret ptr %gep
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}
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define ptr @D98611_3(ptr %c1, i64 %offset) {
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; CHECK-LABEL: @D98611_3(
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; CHECK-NEXT: [[C2:%.*]] = getelementptr inbounds i32, ptr [[C1:%.*]], i64 [[OFFSET:%.*]]
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; CHECK-NEXT: ret ptr [[C2]]
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;
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%c2 = getelementptr inbounds i32, ptr %c1, i64 %offset
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%ptrtoint1 = ptrtoint ptr %c1 to i64
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%ptrtoint2 = ptrtoint ptr %c2 to i64
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%sub = sub i64 %ptrtoint2, %ptrtoint1
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%ashr = ashr exact i64 %sub, 2
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%gep = getelementptr inbounds i32, ptr %c1, i64 %ashr
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ret ptr %gep
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}
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define <8 x ptr> @gep_vector_index_op2_poison(ptr %ptr) {
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; CHECK-LABEL: @gep_vector_index_op2_poison(
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; CHECK-NEXT: ret <8 x ptr> poison
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;
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%res = getelementptr inbounds [144 x i32], ptr %ptr, i64 0, <8 x i64> poison
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ret <8 x ptr> %res
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}
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%t.1 = type { i32, [144 x i32] }
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define <8 x ptr> @gep_vector_index_op3_poison(ptr %ptr) {
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; CHECK-LABEL: @gep_vector_index_op3_poison(
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; CHECK-NEXT: ret <8 x ptr> poison
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;
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%res = getelementptr inbounds %t.1, ptr %ptr, i64 0, i32 1, <8 x i64> poison
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ret <8 x ptr> %res
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}
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%t.2 = type { i32, i32 }
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%t.3 = type { i32, [144 x %t.2 ] }
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define <8 x ptr> @gep_vector_index_op3_poison_constant_index_afterwards(ptr %ptr) {
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; CHECK-LABEL: @gep_vector_index_op3_poison_constant_index_afterwards(
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; CHECK-NEXT: ret <8 x ptr> poison
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;
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%res = getelementptr inbounds %t.3, ptr %ptr, i64 0, i32 1, <8 x i64> poison, i32 1
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ret <8 x ptr> %res
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}
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