9d34b673c0
This is a special case of the general ptrtoint(gep) to add(ptrtoint) transform that is particularly profitable, as everything folds away. Proof: https://alive2.llvm.org/ce/z/fwv8_L Fixes https://github.com/llvm/llvm-project/issues/86417.
139 lines
5.7 KiB
LLVM
139 lines
5.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes=instsimplify < %s | FileCheck %s
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define i64 @ptrtoint_gep_sub(ptr %ptr, i64 %end.addr) {
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; CHECK-LABEL: define i64 @ptrtoint_gep_sub(
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; CHECK-SAME: ptr [[PTR:%.*]], i64 [[END_ADDR:%.*]]) {
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; CHECK-NEXT: ret i64 [[END_ADDR]]
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;
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%ptr.addr = ptrtoint ptr %ptr to i64
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%size = sub i64 %end.addr, %ptr.addr
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%end = getelementptr i8, ptr %ptr, i64 %size
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%end.addr2 = ptrtoint ptr %end to i64
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ret i64 %end.addr2
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}
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define <2 x i64> @ptrtoint_gep_sub_vector(<2 x ptr> %ptr, <2 x i64> %end.addr) {
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; CHECK-LABEL: define <2 x i64> @ptrtoint_gep_sub_vector(
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; CHECK-SAME: <2 x ptr> [[PTR:%.*]], <2 x i64> [[END_ADDR:%.*]]) {
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; CHECK-NEXT: ret <2 x i64> [[END_ADDR]]
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;
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%ptr.addr = ptrtoint <2 x ptr> %ptr to <2 x i64>
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%size = sub <2 x i64> %end.addr, %ptr.addr
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%end = getelementptr i8, <2 x ptr> %ptr, <2 x i64> %size
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%end.addr2 = ptrtoint <2 x ptr> %end to <2 x i64>
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ret <2 x i64> %end.addr2
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}
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define i64 @ptrtoint_gep_sub_wrong_gep_type(ptr %ptr, i64 %end.addr) {
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; CHECK-LABEL: define i64 @ptrtoint_gep_sub_wrong_gep_type(
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; CHECK-SAME: ptr [[PTR:%.*]], i64 [[END_ADDR:%.*]]) {
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; CHECK-NEXT: [[PTR_ADDR:%.*]] = ptrtoint ptr [[PTR]] to i64
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; CHECK-NEXT: [[SIZE:%.*]] = sub i64 [[END_ADDR]], [[PTR_ADDR]]
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; CHECK-NEXT: [[END:%.*]] = getelementptr i32, ptr [[PTR]], i64 [[SIZE]]
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; CHECK-NEXT: [[END_ADDR2:%.*]] = ptrtoint ptr [[END]] to i64
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; CHECK-NEXT: ret i64 [[END_ADDR2]]
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;
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%ptr.addr = ptrtoint ptr %ptr to i64
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%size = sub i64 %end.addr, %ptr.addr
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%end = getelementptr i32, ptr %ptr, i64 %size
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%end.addr2 = ptrtoint ptr %end to i64
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ret i64 %end.addr2
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}
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define i64 @ptrtoint_gep_sub_wrong_ptrtoint_op(ptr %ptr, i64 %end.addr, ptr %ptr2) {
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; CHECK-LABEL: define i64 @ptrtoint_gep_sub_wrong_ptrtoint_op(
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; CHECK-SAME: ptr [[PTR:%.*]], i64 [[END_ADDR:%.*]], ptr [[PTR2:%.*]]) {
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; CHECK-NEXT: [[PTR_ADDR:%.*]] = ptrtoint ptr [[PTR2]] to i64
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; CHECK-NEXT: [[SIZE:%.*]] = sub i64 [[END_ADDR]], [[PTR_ADDR]]
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; CHECK-NEXT: [[END:%.*]] = getelementptr i8, ptr [[PTR]], i64 [[SIZE]]
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; CHECK-NEXT: [[END_ADDR2:%.*]] = ptrtoint ptr [[END]] to i64
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; CHECK-NEXT: ret i64 [[END_ADDR2]]
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;
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%ptr.addr = ptrtoint ptr %ptr2 to i64
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%size = sub i64 %end.addr, %ptr.addr
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%end = getelementptr i8, ptr %ptr, i64 %size
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%end.addr2 = ptrtoint ptr %end to i64
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ret i64 %end.addr2
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}
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define i64 @ptrtoint_gep_sub_wrong_operation(ptr %ptr, i64 %end.addr) {
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; CHECK-LABEL: define i64 @ptrtoint_gep_sub_wrong_operation(
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; CHECK-SAME: ptr [[PTR:%.*]], i64 [[END_ADDR:%.*]]) {
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; CHECK-NEXT: [[PTR_ADDR:%.*]] = ptrtoint ptr [[PTR]] to i64
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; CHECK-NEXT: [[SIZE:%.*]] = add i64 [[END_ADDR]], [[PTR_ADDR]]
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; CHECK-NEXT: [[END:%.*]] = getelementptr i8, ptr [[PTR]], i64 [[SIZE]]
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; CHECK-NEXT: [[END_ADDR2:%.*]] = ptrtoint ptr [[END]] to i64
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; CHECK-NEXT: ret i64 [[END_ADDR2]]
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;
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%ptr.addr = ptrtoint ptr %ptr to i64
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%size = add i64 %end.addr, %ptr.addr
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%end = getelementptr i8, ptr %ptr, i64 %size
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%end.addr2 = ptrtoint ptr %end to i64
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ret i64 %end.addr2
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}
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define i64 @ptrtoint_gep_sub_wrong_operand_order(ptr %ptr, i64 %end.addr) {
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; CHECK-LABEL: define i64 @ptrtoint_gep_sub_wrong_operand_order(
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; CHECK-SAME: ptr [[PTR:%.*]], i64 [[END_ADDR:%.*]]) {
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; CHECK-NEXT: [[PTR_ADDR:%.*]] = ptrtoint ptr [[PTR]] to i64
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; CHECK-NEXT: [[SIZE:%.*]] = sub i64 [[PTR_ADDR]], [[END_ADDR]]
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; CHECK-NEXT: [[END:%.*]] = getelementptr i8, ptr [[PTR]], i64 [[SIZE]]
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; CHECK-NEXT: [[END_ADDR2:%.*]] = ptrtoint ptr [[END]] to i64
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; CHECK-NEXT: ret i64 [[END_ADDR2]]
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;
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%ptr.addr = ptrtoint ptr %ptr to i64
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%size = sub i64 %ptr.addr, %end.addr
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%end = getelementptr i8, ptr %ptr, i64 %size
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%end.addr2 = ptrtoint ptr %end to i64
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ret i64 %end.addr2
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}
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define i32 @ptrtoint_gep_sub_wrong_type(ptr %ptr, i64 %end.addr) {
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; CHECK-LABEL: define i32 @ptrtoint_gep_sub_wrong_type(
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; CHECK-SAME: ptr [[PTR:%.*]], i64 [[END_ADDR:%.*]]) {
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; CHECK-NEXT: [[PTR_ADDR:%.*]] = ptrtoint ptr [[PTR]] to i64
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; CHECK-NEXT: [[SIZE:%.*]] = sub i64 [[END_ADDR]], [[PTR_ADDR]]
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; CHECK-NEXT: [[END:%.*]] = getelementptr i8, ptr [[PTR]], i64 [[SIZE]]
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; CHECK-NEXT: [[END_ADDR2:%.*]] = ptrtoint ptr [[END]] to i32
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; CHECK-NEXT: ret i32 [[END_ADDR2]]
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;
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%ptr.addr = ptrtoint ptr %ptr to i64
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%size = sub i64 %end.addr, %ptr.addr
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%end = getelementptr i8, ptr %ptr, i64 %size
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%end.addr2 = ptrtoint ptr %end to i32
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ret i32 %end.addr2
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}
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define i32 @ptrtoint_gep_sub_narrow_type(ptr %ptr, i32 %end.addr) {
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; CHECK-LABEL: define i32 @ptrtoint_gep_sub_narrow_type(
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; CHECK-SAME: ptr [[PTR:%.*]], i32 [[END_ADDR:%.*]]) {
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; CHECK-NEXT: [[PTR_ADDR:%.*]] = ptrtoint ptr [[PTR]] to i32
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; CHECK-NEXT: [[SIZE:%.*]] = sub i32 [[END_ADDR]], [[PTR_ADDR]]
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; CHECK-NEXT: [[END:%.*]] = getelementptr i8, ptr [[PTR]], i32 [[SIZE]]
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; CHECK-NEXT: [[END_ADDR2:%.*]] = ptrtoint ptr [[END]] to i32
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; CHECK-NEXT: ret i32 [[END_ADDR2]]
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;
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%ptr.addr = ptrtoint ptr %ptr to i32
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%size = sub i32 %end.addr, %ptr.addr
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%end = getelementptr i8, ptr %ptr, i32 %size
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%end.addr2 = ptrtoint ptr %end to i32
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ret i32 %end.addr2
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}
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define i128 @ptrtoint_gep_sub_wide_type(ptr %ptr, i128 %end.addr) {
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; CHECK-LABEL: define i128 @ptrtoint_gep_sub_wide_type(
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; CHECK-SAME: ptr [[PTR:%.*]], i128 [[END_ADDR:%.*]]) {
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; CHECK-NEXT: [[PTR_ADDR:%.*]] = ptrtoint ptr [[PTR]] to i128
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; CHECK-NEXT: [[SIZE:%.*]] = sub i128 [[END_ADDR]], [[PTR_ADDR]]
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; CHECK-NEXT: [[END:%.*]] = getelementptr i8, ptr [[PTR]], i128 [[SIZE]]
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; CHECK-NEXT: [[END_ADDR2:%.*]] = ptrtoint ptr [[END]] to i128
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; CHECK-NEXT: ret i128 [[END_ADDR2]]
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;
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%ptr.addr = ptrtoint ptr %ptr to i128
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%size = sub i128 %end.addr, %ptr.addr
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%end = getelementptr i8, ptr %ptr, i128 %size
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%end.addr2 = ptrtoint ptr %end to i128
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ret i128 %end.addr2
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}
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