48 lines
1.3 KiB
LLVM
48 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
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; Make sure constraints where all variable coefficients are 0 are handled
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; properly.
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define i1 @test_1_always_false(i32 %A, i32 %B) {
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; CHECK-LABEL: @test_1_always_false(
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; CHECK-NEXT: [[C_1:%.*]] = icmp ugt i32 [[A:%.*]], [[A]]
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; CHECK-NEXT: br i1 false, label [[IF_END_I16:%.*]], label [[IF_THEN_I10:%.*]]
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; CHECK: if.then.i10:
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; CHECK-NEXT: ret i1 false
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; CHECK: if.end.i16:
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; CHECK-NEXT: [[C_2:%.*]] = icmp ugt i32 [[A]], [[A]]
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; CHECK-NEXT: ret i1 false
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;
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%c.1 = icmp ugt i32 %A, %A
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br i1 %c.1, label %if.end.i16, label %if.then.i10
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if.then.i10:
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ret i1 false
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if.end.i16:
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%c.2 = icmp ugt i32 %A, %A
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ret i1 %c.2
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}
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define i1 @test_2_always_true(i32 %A, i32 %B) {
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; CHECK-LABEL: @test_2_always_true(
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; CHECK-NEXT: [[C_1:%.*]] = icmp uge i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: br i1 [[C_1]], label [[IF_END_I16:%.*]], label [[IF_THEN_I10:%.*]]
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; CHECK: if.then.i10:
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; CHECK-NEXT: ret i1 false
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; CHECK: if.end.i16:
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; CHECK-NEXT: [[C_2:%.*]] = icmp uge i32 [[A]], [[A]]
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; CHECK-NEXT: ret i1 true
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;
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%c.1 = icmp uge i32 %A, %B
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br i1 %c.1, label %if.end.i16, label %if.then.i10
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if.then.i10:
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ret i1 false
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if.end.i16:
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%c.2 = icmp uge i32 %A, %A
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ret i1 %c.2
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}
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