3f8027fb67
This updates transform test cases for ADCE AddDiscriminators AggressiveInstCombine AlignmentFromAssumptions ArgumentPromotion BDCE CalledValuePropagation DCE Reg2Mem WholeProgramDevirt to use the -passes syntax when specifying the pipeline. Given that LLVM_ENABLE_NEW_PASS_MANAGER isn't set to off (which is a deprecated feature) the updated test cases already used the new pass manager, but they were using the legacy syntax when specifying the passes to run. This patch can be seen as a step toward deprecating that interface. This patch also removes some redundant RUN lines. Here I am referring to test cases that had multiple RUN lines verifying both the legacy "-passname" syntax and the new "-passes=passname" syntax. Since we switched the default pass manager to "new PM" both RUN lines have verified the new PM version of the pass (more or less wasting time running the same test twice), unless LLVM_ENABLE_NEW_PASS_MANAGER is set to "off". It is assumed that it is enough to run these tests with the new pass manager now. Differential Revision: https://reviews.llvm.org/D108472
60 lines
2.4 KiB
LLVM
60 lines
2.4 KiB
LLVM
; Test for PR45393: Two virtual functions that return unique i1 values
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; in the same vtable. Both calls are optimized to a comparison of
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; this's vptr against the address of the vtable. When nesting these
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; checks, LLVM would previously assume the nested check always fails,
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; but that assumption does not hold if both checks refer to the same vtable.
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; This tests checks that this case is handled correctly.
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;
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; RUN: opt -S -passes='wholeprogramdevirt,default<O2>' -wholeprogramdevirt-summary-action=import \
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; RUN: -wholeprogramdevirt-read-summary=%p/Inputs/unique-retval-same-vtable.yaml \
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; RUN: -o - %s | FileCheck %s
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;
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; Check that C::f() contains both possible return values.
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; CHECK-LABEL: define {{.*}} @_ZNK1C1fEv
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; CHECK-NOT: }
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; CHECK: 20074028
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; CHECK-NOT: }
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; CHECK: 1008434
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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%class.C = type { i32 (...)** }
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define hidden i32 @_ZNK1C1fEv(%class.C* %this) {
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entry:
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%0 = bitcast %class.C* %this to i1 (%class.C*)***
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%vtable = load i1 (%class.C*)**, i1 (%class.C*)*** %0
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%1 = bitcast i1 (%class.C*)** %vtable to i8*
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%2 = tail call i1 @llvm.type.test(i8* %1, metadata !"_ZTS1C")
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tail call void @llvm.assume(i1 %2)
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%vfn = getelementptr inbounds i1 (%class.C*)*, i1 (%class.C*)** %vtable, i64 2
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%3 = load i1 (%class.C*)*, i1 (%class.C*)** %vfn
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%call = tail call zeroext i1 %3(%class.C* %this)
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br i1 %call, label %if.then, label %return
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if.then:
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%vtable2 = load i1 (%class.C*)**, i1 (%class.C*)*** %0
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%4 = bitcast i1 (%class.C*)** %vtable2 to i8*
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%5 = tail call i1 @llvm.type.test(i8* %4, metadata !"_ZTS1C")
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tail call void @llvm.assume(i1 %5)
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%vfn3 = getelementptr inbounds i1 (%class.C*)*, i1 (%class.C*)** %vtable2, i64 3
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%6 = load i1 (%class.C*)*, i1 (%class.C*)** %vfn3
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; The method being called here and the method being called before
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; the branch above both return true in the same vtable and only that
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; vtable. Therefore, if this call is reached, we must select
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; 20074028. Earlier versions of LLVM mistakenly concluded that
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; this code *never* selects 200744028.
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%call4 = tail call zeroext i1 %6(%class.C* nonnull %this)
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%. = select i1 %call4, i32 20074028, i32 3007762
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br label %return
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return:
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%retval.0 = phi i32 [ %., %if.then ], [ 1008434, %entry ]
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ret i32 %retval.0
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}
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declare i1 @llvm.type.test(i8*, metadata)
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declare void @llvm.assume(i1)
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