derek.holloway
7502bf64a4
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150 lines
6.4 KiB
LLVM
150 lines
6.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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declare { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32>, <2 x i32>)
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declare { <2 x i8>, <2 x i1> } @llvm.uadd.with.overflow.v2i8(<2 x i8>, <2 x i8>)
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declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32)
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declare { i8, i1 } @llvm.uadd.with.overflow.i8(i8, i8)
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define { i32, i1 } @simple_fold(i32 %x) {
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; CHECK-LABEL: @simple_fold(
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; CHECK-NEXT: [[B:%.*]] = call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 [[X:%.*]], i32 20)
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; CHECK-NEXT: ret { i32, i1 } [[B]]
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;
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%a = add nuw i32 %x, 7
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%b = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 13)
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ret { i32, i1 } %b
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}
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define { i8, i1 } @fold_on_constant_add_no_overflow(i8 %x) {
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; CHECK-LABEL: @fold_on_constant_add_no_overflow(
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; CHECK-NEXT: [[B:%.*]] = call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 [[X:%.*]], i8 -1)
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; CHECK-NEXT: ret { i8, i1 } [[B]]
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;
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%a = add nuw i8 %x, 200
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%b = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 55)
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ret { i8, i1 } %b
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}
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define { i8, i1 } @no_fold_on_constant_add_overflow(i8 %x) {
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; CHECK-LABEL: @no_fold_on_constant_add_overflow(
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; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i8, i1 } { i8 poison, i1 true }, i8 [[X:%.*]], 0
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; CHECK-NEXT: ret { i8, i1 } [[TMP1]]
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;
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%a = add nuw i8 %x, 200
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%b = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 56)
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ret { i8, i1 } %b
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}
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define { <2 x i8>, <2 x i1> } @no_fold_vector_no_overflow(<2 x i8> %x) {
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; CHECK-LABEL: @no_fold_vector_no_overflow(
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; CHECK-NEXT: [[A:%.*]] = add nuw <2 x i8> [[X:%.*]], <i8 -57, i8 -56>
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; CHECK-NEXT: [[B:%.*]] = tail call { <2 x i8>, <2 x i1> } @llvm.uadd.with.overflow.v2i8(<2 x i8> [[A]], <2 x i8> splat (i8 55))
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; CHECK-NEXT: ret { <2 x i8>, <2 x i1> } [[B]]
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;
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%a = add nuw <2 x i8> %x, <i8 199, i8 200>
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%b = tail call { <2 x i8>, <2 x i1> } @llvm.uadd.with.overflow.v2i8(<2 x i8> %a, <2 x i8> <i8 55, i8 55>)
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ret { <2 x i8>, <2 x i1> } %b
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}
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define { <2 x i8>, <2 x i1> } @no_fold_vector_overflow(<2 x i8> %x) {
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; CHECK-LABEL: @no_fold_vector_overflow(
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; CHECK-NEXT: [[A:%.*]] = add nuw <2 x i8> [[X:%.*]], <i8 -56, i8 -55>
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; CHECK-NEXT: [[B:%.*]] = tail call { <2 x i8>, <2 x i1> } @llvm.uadd.with.overflow.v2i8(<2 x i8> [[A]], <2 x i8> splat (i8 55))
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; CHECK-NEXT: ret { <2 x i8>, <2 x i1> } [[B]]
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;
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%a = add nuw <2 x i8> %x, <i8 200, i8 201>
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%b = tail call { <2 x i8>, <2 x i1> } @llvm.uadd.with.overflow.v2i8(<2 x i8> %a, <2 x i8> <i8 55, i8 55>)
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ret { <2 x i8>, <2 x i1> } %b
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}
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define { <2 x i32>, <2 x i1> } @fold_simple_splat_constant(<2 x i32> %x) {
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; CHECK-LABEL: @fold_simple_splat_constant(
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; CHECK-NEXT: [[B:%.*]] = call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> [[X:%.*]], <2 x i32> splat (i32 42))
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; CHECK-NEXT: ret { <2 x i32>, <2 x i1> } [[B]]
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;
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%a = add nuw <2 x i32> %x, <i32 12, i32 12>
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%b = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> %a, <2 x i32> <i32 30, i32 30>)
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ret { <2 x i32>, <2 x i1> } %b
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}
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define { <2 x i32>, <2 x i1> } @no_fold_splat_undef_constant(<2 x i32> %x) {
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; CHECK-LABEL: @no_fold_splat_undef_constant(
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; CHECK-NEXT: [[A:%.*]] = add nuw <2 x i32> [[X:%.*]], <i32 12, i32 undef>
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; CHECK-NEXT: [[B:%.*]] = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> [[A]], <2 x i32> splat (i32 30))
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; CHECK-NEXT: ret { <2 x i32>, <2 x i1> } [[B]]
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;
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%a = add nuw <2 x i32> %x, <i32 12, i32 undef>
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%b = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> %a, <2 x i32> <i32 30, i32 30>)
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ret { <2 x i32>, <2 x i1> } %b
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}
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define { <2 x i32>, <2 x i1> } @no_fold_splat_not_constant(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @no_fold_splat_not_constant(
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; CHECK-NEXT: [[A:%.*]] = add nuw <2 x i32> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[B:%.*]] = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> [[A]], <2 x i32> splat (i32 30))
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; CHECK-NEXT: ret { <2 x i32>, <2 x i1> } [[B]]
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;
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%a = add nuw <2 x i32> %x, %y
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%b = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> %a, <2 x i32> <i32 30, i32 30>)
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ret { <2 x i32>, <2 x i1> } %b
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}
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define { i32, i1 } @fold_nuwnsw(i32 %x) {
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; CHECK-LABEL: @fold_nuwnsw(
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; CHECK-NEXT: [[B:%.*]] = call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 [[X:%.*]], i32 42)
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; CHECK-NEXT: ret { i32, i1 } [[B]]
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;
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%a = add nuw nsw i32 %x, 12
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%b = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 30)
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ret { i32, i1 } %b
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}
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define { i32, i1 } @no_fold_nsw(i32 %x) {
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; CHECK-LABEL: @no_fold_nsw(
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; CHECK-NEXT: [[A:%.*]] = add nsw i32 [[X:%.*]], 12
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; CHECK-NEXT: [[B:%.*]] = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 [[A]], i32 30)
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; CHECK-NEXT: ret { i32, i1 } [[B]]
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;
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%a = add nsw i32 %x, 12
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%b = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 30)
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ret { i32, i1 } %b
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}
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define { i32, i1 } @no_fold_wrapped_add(i32 %x) {
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; CHECK-LABEL: @no_fold_wrapped_add(
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; CHECK-NEXT: [[A:%.*]] = add i32 [[X:%.*]], 12
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; CHECK-NEXT: [[B:%.*]] = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 [[A]], i32 30)
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; CHECK-NEXT: ret { i32, i1 } [[B]]
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;
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%a = add i32 %x, 12
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%b = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 30, i32 %a)
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ret { i32, i1 } %b
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}
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define { <2 x i32>, <2 x i1> } @fold_simple_splat_with_disjoint_or_constant(<2 x i32> %x) {
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; CHECK-LABEL: @fold_simple_splat_with_disjoint_or_constant(
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; CHECK-NEXT: [[B:%.*]] = call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> [[X:%.*]], <2 x i32> splat (i32 42))
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; CHECK-NEXT: ret { <2 x i32>, <2 x i1> } [[B]]
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;
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%a = or disjoint <2 x i32> %x, <i32 12, i32 12>
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%b = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> %a, <2 x i32> <i32 30, i32 30>)
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ret { <2 x i32>, <2 x i1> } %b
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}
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define { <2 x i32>, <2 x i1> } @fold_simple_splat_constant_with_or_fail(<2 x i32> %x) {
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; CHECK-LABEL: @fold_simple_splat_constant_with_or_fail(
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; CHECK-NEXT: [[A:%.*]] = or <2 x i32> [[X:%.*]], splat (i32 12)
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; CHECK-NEXT: [[B:%.*]] = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> [[A]], <2 x i32> splat (i32 30))
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; CHECK-NEXT: ret { <2 x i32>, <2 x i1> } [[B]]
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;
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%a = or <2 x i32> %x, <i32 12, i32 12>
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%b = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> %a, <2 x i32> <i32 30, i32 30>)
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ret { <2 x i32>, <2 x i1> } %b
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}
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