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[test] Add coverage for existing overflow rule with uadd.with.overflow
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py | ||
; RUN: opt < %s -instcombine -S | FileCheck %s | ||
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declare { i64, i1 } @llvm.uadd.with.overflow.i64(i64, i64) | ||
declare { i8, i1 } @llvm.uadd.with.overflow.i8(i8, i8) | ||
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define i1 @test_generic(i64 %a, i64 %b) { | ||
; CHECK-LABEL: @test_generic( | ||
; CHECK-NEXT: [[RES:%.*]] = tail call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 [[A:%.*]], i64 [[B:%.*]]) | ||
; CHECK-NEXT: [[OVERFLOW:%.*]] = extractvalue { i64, i1 } [[RES]], 1 | ||
; CHECK-NEXT: ret i1 [[OVERFLOW]] | ||
; | ||
%res = tail call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) | ||
%overflow = extractvalue { i64, i1 } %res, 1 | ||
ret i1 %overflow | ||
} | ||
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define i1 @test_constant0(i8 %a) { | ||
; CHECK-LABEL: @test_constant0( | ||
; CHECK-NEXT: ret i1 false | ||
; | ||
%res = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 0) | ||
%overflow = extractvalue { i8, i1 } %res, 1 | ||
ret i1 %overflow | ||
} | ||
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define i1 @test_constant1(i8 %a) { | ||
; CHECK-LABEL: @test_constant1( | ||
; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp eq i8 [[A:%.*]], -1 | ||
; CHECK-NEXT: ret i1 [[OVERFLOW]] | ||
; | ||
%res = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 1) | ||
%overflow = extractvalue { i8, i1 } %res, 1 | ||
ret i1 %overflow | ||
} | ||
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define i1 @test_constant2(i8 %a) { | ||
; CHECK-LABEL: @test_constant2( | ||
; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ugt i8 [[A:%.*]], -3 | ||
; CHECK-NEXT: ret i1 [[OVERFLOW]] | ||
; | ||
%res = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 2) | ||
%overflow = extractvalue { i8, i1 } %res, 1 | ||
ret i1 %overflow | ||
} | ||
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define i1 @test_constant3(i8 %a) { | ||
; CHECK-LABEL: @test_constant3( | ||
; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ugt i8 [[A:%.*]], -4 | ||
; CHECK-NEXT: ret i1 [[OVERFLOW]] | ||
; | ||
%res = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 3) | ||
%overflow = extractvalue { i8, i1 } %res, 1 | ||
ret i1 %overflow | ||
} | ||
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define i1 @test_constant4(i8 %a) { | ||
; CHECK-LABEL: @test_constant4( | ||
; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ugt i8 [[A:%.*]], -5 | ||
; CHECK-NEXT: ret i1 [[OVERFLOW]] | ||
; | ||
%res = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 4) | ||
%overflow = extractvalue { i8, i1 } %res, 1 | ||
ret i1 %overflow | ||
} | ||
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define i1 @test_constant127(i8 %a) { | ||
; CHECK-LABEL: @test_constant127( | ||
; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ugt i8 [[A:%.*]], -128 | ||
; CHECK-NEXT: ret i1 [[OVERFLOW]] | ||
; | ||
%res = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 127) | ||
%overflow = extractvalue { i8, i1 } %res, 1 | ||
ret i1 %overflow | ||
} | ||
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define i1 @test_constant128(i8 %a) { | ||
; CHECK-LABEL: @test_constant128( | ||
; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp slt i8 [[A:%.*]], 0 | ||
; CHECK-NEXT: ret i1 [[OVERFLOW]] | ||
; | ||
%res = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 128) | ||
%overflow = extractvalue { i8, i1 } %res, 1 | ||
ret i1 %overflow | ||
} | ||
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define i1 @test_constant255(i8 %a) { | ||
; CHECK-LABEL: @test_constant255( | ||
; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ne i8 [[A:%.*]], 0 | ||
; CHECK-NEXT: ret i1 [[OVERFLOW]] | ||
; | ||
%res = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 255) | ||
%overflow = extractvalue { i8, i1 } %res, 1 | ||
ret i1 %overflow | ||
} | ||
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