derek.holloway
7502bf64a4
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36 lines
1.2 KiB
LLVM
36 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
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define i1 @test_overflow_sub_coefficients(i8 %x, i64 %y) {
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; CHECK-LABEL: define i1 @test_overflow_sub_coefficients
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; CHECK-SAME: (i8 [[X:%.*]], i64 [[Y:%.*]]) {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[X]] to i64
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; CHECK-NEXT: [[SHL:%.*]] = shl nuw nsw i64 [[ZEXT]], 63
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; CHECK-NEXT: [[ICMP:%.*]] = icmp uge i64 [[SHL]], [[Y]]
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; CHECK-NEXT: ret i1 [[ICMP]]
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;
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bb:
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%zext = zext i8 %x to i64
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%shl = shl nuw nsw i64 %zext, 63
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%icmp = icmp uge i64 %shl, %y
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ret i1 %icmp
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}
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define i1 @test_overflow_in_negate_constraint(i8 %x, i64 %y) {
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; CHECK-LABEL: define i1 @test_overflow_in_negate_constraint
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; CHECK-SAME: (i8 [[X:%.*]], i64 [[Y:%.*]]) {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[X]] to i64
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; CHECK-NEXT: [[SHL:%.*]] = shl nuw nsw i64 [[ZEXT]], 63
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; CHECK-NEXT: [[ICMP:%.*]] = icmp uge i64 [[Y]], [[SHL]]
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; CHECK-NEXT: ret i1 [[ICMP]]
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;
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bb:
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%zext = zext i8 %x to i64
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%shl = shl nuw nsw i64 %zext, 63
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%icmp = icmp uge i64 %y, %shl
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ret i1 %icmp
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}
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