97 lines
2.9 KiB
LLVM
97 lines
2.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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declare { i64, i1 } @llvm.umul.with.overflow.i64(i64, i64)
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declare { i8, i1 } @llvm.umul.with.overflow.i8(i8, i8)
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define i1 @test_generic(i64 %a, i64 %b) {
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; CHECK-LABEL: @test_generic(
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; CHECK-NEXT: [[RES:%.*]] = tail call { i64, i1 } @llvm.umul.with.overflow.i64(i64 [[A:%.*]], i64 [[B:%.*]])
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; CHECK-NEXT: [[OVERFLOW:%.*]] = extractvalue { i64, i1 } [[RES]], 1
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; CHECK-NEXT: ret i1 [[OVERFLOW]]
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;
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%res = tail call { i64, i1 } @llvm.umul.with.overflow.i64(i64 %a, i64 %b)
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%overflow = extractvalue { i64, i1 } %res, 1
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ret i1 %overflow
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}
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define i1 @test_constant0(i8 %a) {
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; CHECK-LABEL: @test_constant0(
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; CHECK-NEXT: ret i1 false
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;
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%res = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 %a, i8 0)
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%overflow = extractvalue { i8, i1 } %res, 1
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ret i1 %overflow
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}
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define i1 @test_constant1(i8 %a) {
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; CHECK-LABEL: @test_constant1(
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; CHECK-NEXT: ret i1 false
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;
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%res = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 %a, i8 1)
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%overflow = extractvalue { i8, i1 } %res, 1
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ret i1 %overflow
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}
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define i1 @test_constant2(i8 %a) {
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; CHECK-LABEL: @test_constant2(
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; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp slt i8 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[OVERFLOW]]
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;
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%res = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 %a, i8 2)
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%overflow = extractvalue { i8, i1 } %res, 1
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ret i1 %overflow
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}
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define i1 @test_constant3(i8 %a) {
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; CHECK-LABEL: @test_constant3(
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; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ugt i8 [[A:%.*]], 85
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; CHECK-NEXT: ret i1 [[OVERFLOW]]
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;
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%res = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 %a, i8 3)
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%overflow = extractvalue { i8, i1 } %res, 1
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ret i1 %overflow
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}
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define i1 @test_constant4(i8 %a) {
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; CHECK-LABEL: @test_constant4(
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; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ugt i8 [[A:%.*]], 63
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; CHECK-NEXT: ret i1 [[OVERFLOW]]
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;
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%res = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 %a, i8 4)
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%overflow = extractvalue { i8, i1 } %res, 1
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ret i1 %overflow
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}
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define i1 @test_constant127(i8 %a) {
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; CHECK-LABEL: @test_constant127(
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; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ugt i8 [[A:%.*]], 2
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; CHECK-NEXT: ret i1 [[OVERFLOW]]
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;
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%res = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 %a, i8 127)
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%overflow = extractvalue { i8, i1 } %res, 1
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ret i1 %overflow
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}
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define i1 @test_constant128(i8 %a) {
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; CHECK-LABEL: @test_constant128(
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; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ugt i8 [[A:%.*]], 1
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; CHECK-NEXT: ret i1 [[OVERFLOW]]
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;
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%res = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 %a, i8 128)
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%overflow = extractvalue { i8, i1 } %res, 1
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ret i1 %overflow
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}
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define i1 @test_constant255(i8 %a) {
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; CHECK-LABEL: @test_constant255(
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; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ugt i8 [[A:%.*]], 1
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; CHECK-NEXT: ret i1 [[OVERFLOW]]
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;
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%res = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 %a, i8 255)
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%overflow = extractvalue { i8, i1 } %res, 1
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ret i1 %overflow
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}
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