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
82 lines
2.8 KiB
LLVM
82 lines
2.8 KiB
LLVM
; RUN: opt < %s -passes=globaldce -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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; struct A {
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; A();
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; virtual int foo();
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; };
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;
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; struct B : A {
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; B();
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; virtual int foo();
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; };
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;
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; A::A() {}
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; B::B() {}
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; int A::foo() { return 42; }
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; int B::foo() { return 1337; }
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;
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; extern "C" int test(A *p) { return p->foo(); }
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; The virtual call in test could be dispatched to either A::foo or B::foo, so
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; both must be retained.
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%struct.A = type { i32 (...)** }
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%struct.B = type { %struct.A }
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; CHECK: @_ZTV1A = internal unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* null, i8* bitcast (i32 (%struct.A*)* @_ZN1A3fooEv to i8*)] }
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@_ZTV1A = internal unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* null, i8* bitcast (i32 (%struct.A*)* @_ZN1A3fooEv to i8*)] }, align 8, !type !0, !type !1, !vcall_visibility !2
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; CHECK: @_ZTV1B = internal unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* null, i8* bitcast (i32 (%struct.B*)* @_ZN1B3fooEv to i8*)] }
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@_ZTV1B = internal unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* null, i8* bitcast (i32 (%struct.B*)* @_ZN1B3fooEv to i8*)] }, align 8, !type !0, !type !1, !type !3, !type !4, !vcall_visibility !2
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; CHECK: define internal i32 @_ZN1A3fooEv(
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define internal i32 @_ZN1A3fooEv(%struct.A* nocapture readnone %this) {
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entry:
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ret i32 42
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}
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; CHECK: define internal i32 @_ZN1B3fooEv(
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define internal i32 @_ZN1B3fooEv(%struct.B* nocapture readnone %this) {
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entry:
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ret i32 1337
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}
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define hidden void @_ZN1AC2Ev(%struct.A* nocapture %this) {
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entry:
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%0 = getelementptr inbounds %struct.A, %struct.A* %this, i64 0, i32 0
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store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTV1A, i64 0, inrange i32 0, i64 2) to i32 (...)**), i32 (...)*** %0, align 8
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ret void
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}
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define hidden void @_ZN1BC2Ev(%struct.B* nocapture %this) {
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entry:
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%0 = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 0, i32 0
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store i32 (...)** bitcast (i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTV1B, i64 0, inrange i32 0, i64 2) to i32 (...)**), i32 (...)*** %0, align 8
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ret void
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}
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define hidden i32 @test(%struct.A* %p) {
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entry:
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%0 = bitcast %struct.A* %p to i8**
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%vtable1 = load i8*, i8** %0, align 8
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%1 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable1, i32 0, metadata !"_ZTS1A"), !nosanitize !10
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%2 = extractvalue { i8*, i1 } %1, 0, !nosanitize !10
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%3 = bitcast i8* %2 to i32 (%struct.A*)*, !nosanitize !10
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%call = tail call i32 %3(%struct.A* %p)
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ret i32 %call
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}
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declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata) #2
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!llvm.module.flags = !{!5}
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!0 = !{i64 16, !"_ZTS1A"}
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!1 = !{i64 16, !"_ZTSM1AFivE.virtual"}
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!2 = !{i64 2}
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!3 = !{i64 16, !"_ZTS1B"}
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!4 = !{i64 16, !"_ZTSM1BFivE.virtual"}
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!5 = !{i32 1, !"Virtual Function Elim", i32 1}
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!10 = !{}
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