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
33 lines
706 B
LLVM
33 lines
706 B
LLVM
; RUN: opt < %s -passes=sccp -S | FileCheck %s
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; Test that SCCP has basic knowledge of when div can nuke overdefined values.
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; 0 / X = 0 even if X is overdefined.
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; CHECK-LABEL: test1
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; CHECK-NEXT: ret i32 0
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define i32 @test1(i32 %foo) {
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%tinkywinky = udiv i32 0, %foo
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ret i32 %tinkywinky
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}
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; CHECK-LABEL: test2
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; CHECK-NEXT: ret i32 0
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define i32 @test2(i32 %foo) {
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%tinkywinky = sdiv i32 0, %foo
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ret i32 %tinkywinky
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}
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; CHECK-LABEL: test3
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; CHECK: ret i32 %tinkywinky
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define i32 @test3(i32 %foo) {
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%tinkywinky = udiv i32 %foo, 0
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ret i32 %tinkywinky
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}
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; CHECK-LABEL: test4
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; CHECK: ret i32 %tinkywinky
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define i32 @test4(i32 %foo) {
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%tinkywinky = sdiv i32 %foo, 0
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ret i32 %tinkywinky
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}
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