f16d2bec40
This aims to fix a missed inlining case. If there's a virtual call in the callee on an alloca (stack allocated object) in the caller, and the callee is inlined into the caller, the post-inline cleanup would devirtualize the virtual call, but if the next iteration of DevirtSCCRepeatedPass doesn't happen (under the new pass manager), which is based on a heuristic to determine whether to reiterate, we may miss inlining the devirtualized call. This enables inlining in clang/test/CodeGenCXX/member-function-pointer-calls.cpp. This is a second commit after a revert https://reviews.llvm.org/rG4569b3a86f8a4b1b8ad28fe2321f936f9d7ffd43 and a fix https://reviews.llvm.org/rG41e06ae7ba91. Differential Revision: https://reviews.llvm.org/D69591
32 lines
1.0 KiB
C++
32 lines
1.0 KiB
C++
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -O3 -fno-experimental-new-pass-manager -o - | FileCheck %s --check-prefixes=CHECK,CHECK-LEGACY
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// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -O3 -fexperimental-new-pass-manager -o - | FileCheck %s --check-prefixes=CHECK,CHECK-NEWPM
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// RUN: %clang_cc1 %s -triple=x86_64-windows-gnu -emit-llvm -o - | FileCheck %s -check-prefix MINGW64
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struct A {
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virtual int vf1() { return 1; }
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virtual int vf2() { return 2; }
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};
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int f(A* a, int (A::*fp)()) {
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return (a->*fp)();
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}
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// CHECK-LABEL: define i32 @_Z2g1v()
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// CHECK-NOT: }
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// CHECK: ret i32 1
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// MINGW64-LABEL: define dso_local i32 @_Z2g1v()
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// MINGW64: call i32 @_Z1fP1AMS_FivE(%struct.A* %{{.*}}, { i64, i64 }* %{{.*}})
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int g1() {
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A a;
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return f(&a, &A::vf1);
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}
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// CHECK-LABEL: define i32 @_Z2g2v()
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// CHECK-NOT: }
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// CHECK: ret i32 2
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// MINGW64-LABEL: define dso_local i32 @_Z2g2v()
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// MINGW64: call i32 @_Z1fP1AMS_FivE(%struct.A* %{{.*}}, { i64, i64 }* %{{.*}})
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int g2() {
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A a;
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return f(&a, &A::vf2);
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}
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