8ebb3eac02
The legacy PM is deprecated, so update a bunch of lit tests running opt to use the new PM syntax when specifying the pipeline. In this patch focus has been put on test cases for ConstantMerge, ConstraintElimination, CorrelatedValuePropagation, GlobalDCE, GlobalOpt, SCCP, TailCallElim and PredicateInfo. Differential Revision: https://reviews.llvm.org/D114516
76 lines
1.9 KiB
LLVM
76 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=correlated-propagation -S < %s | FileCheck %s
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; Checks that we don't crash on conflicting facts about a value
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; (i.e. unreachable code)
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; Test that we can handle conflict edge facts
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define i8 @test(i8 %a) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i8 [[A:%.*]], 5
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; CHECK-NEXT: br i1 [[CMP1]], label [[NEXT:%.*]], label [[EXIT:%.*]]
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; CHECK: next:
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; CHECK-NEXT: br i1 false, label [[DEAD:%.*]], label [[EXIT]]
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; CHECK: dead:
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; CHECK-NEXT: ret i8 5
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; CHECK: exit:
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; CHECK-NEXT: ret i8 0
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;
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%cmp1 = icmp eq i8 %a, 5
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br i1 %cmp1, label %next, label %exit
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next:
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%cmp2 = icmp eq i8 %a, 3
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br i1 %cmp2, label %dead, label %exit
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dead:
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; NOTE: undef, or 3 would be equal valid
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ret i8 %a
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exit:
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ret i8 0
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}
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declare void @llvm.assume(i1)
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; Test that we can handle conflicting assume vs edge facts
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define i8 @test2(i8 %a) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i8 [[A:%.*]], 5
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; CHECK-NEXT: call void @llvm.assume(i1 [[CMP1]])
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; CHECK-NEXT: br i1 false, label [[DEAD:%.*]], label [[EXIT:%.*]]
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; CHECK: dead:
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; CHECK-NEXT: ret i8 5
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; CHECK: exit:
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; CHECK-NEXT: ret i8 0
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;
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%cmp1 = icmp eq i8 %a, 5
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call void @llvm.assume(i1 %cmp1)
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%cmp2 = icmp eq i8 %a, 3
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br i1 %cmp2, label %dead, label %exit
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dead:
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ret i8 %a
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exit:
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ret i8 0
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}
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define i8 @test3(i8 %a) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i8 [[A:%.*]], 5
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; CHECK-NEXT: br i1 [[CMP1]], label [[DEAD:%.*]], label [[EXIT:%.*]]
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; CHECK: dead:
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; CHECK-NEXT: call void @llvm.assume(i1 false)
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; CHECK-NEXT: ret i8 5
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; CHECK: exit:
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; CHECK-NEXT: ret i8 0
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;
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%cmp1 = icmp eq i8 %a, 5
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br i1 %cmp1, label %dead, label %exit
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dead:
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%cmp2 = icmp eq i8 %a, 3
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call void @llvm.assume(i1 %cmp2)
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ret i8 %a
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exit:
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ret i8 0
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}
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