ecb502342c
We currently emit the selector load early, but only because we need it to compute the signature (so that we know which msgSend variant to call). We can prepare the signature with a plain undef, and replace it with the materialized selector value if (and only if) needed, later. Concretely, this usually doesn't have an effect, but tests need updating because we reordered the receiver bitcast and the selector load, which is always fine. There is one notable change: with this, when a msgSend needs a receiver null check, the selector is now loaded in the non-null block, instead of before the null check. That should be a mild improvement.
25 lines
871 B
Plaintext
25 lines
871 B
Plaintext
// RUN: %clang_cc1 -x objective-c++ -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-10.7 -emit-llvm -o - %s | FileCheck %s
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// Properly instantiate a non-dependent message expression which
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// requires a contextual conversion to ObjC pointer type.
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// <rdar://13305374>
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@interface Test0
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- (void) foo;
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@end
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namespace test0 {
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struct A {
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operator Test0*();
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};
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template <class T> void foo() {
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A a;
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[a foo];
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}
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template void foo<int>();
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// CHECK-LABEL: define weak_odr void @_ZN5test03fooIiEEvv()
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// CHECK: [[T0:%.*]] = call noundef [[TEST0:%.*]]* @_ZN5test01AcvP5Test0Ev(
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// CHECK-NEXT: [[T2:%.*]] = bitcast [[TEST0]]* [[T0]] to i8*
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// CHECK-NEXT: [[T1:%.*]] = load i8*, i8**
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// CHECK-NEXT: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*)*)(i8* noundef [[T2]], i8* noundef [[T1]])
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// CHECK-NEXT: ret void
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}
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