llvm-capstone/clang/test/Driver/objc-convert-messages-to-runtime-calls.m
Pete Cooper e388680dfa Convert some ObjC msgSends to runtime calls.
It is faster to directly call the ObjC runtime for methods such as alloc/allocWithZone instead of sending a message to those functions.

This patch adds support for converting messages to alloc/allocWithZone to their equivalent runtime calls.

Tests included for the positive case of applying this transformation, negative tests that we ensure we only convert "alloc" to objc_alloc, not "alloc2", and also a driver test to ensure we enable this only for supported runtime versions.

Reviewed By: rjmccall

https://reviews.llvm.org/D55349

llvm-svn: 348687
2018-12-08 05:13:50 +00:00

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// RUN: %clang %s -### -o %t.o 2>&1 -fsyntax-only -fobjc-convert-messages-to-runtime-calls -fno-objc-convert-messages-to-runtime-calls -target x86_64-apple-macosx10.10.0 | FileCheck %s --check-prefix=DISABLE
// RUN: %clang %s -### -o %t.o 2>&1 -fsyntax-only -fno-objc-convert-messages-to-runtime-calls -fobjc-convert-messages-to-runtime-calls -target x86_64-apple-macosx10.10.0 | FileCheck %s --check-prefix=ENABLE
// Check that we pass fobjc-convert-messages-to-runtime-calls only when supported, and not explicitly disabled.
// DISABLE: "-fno-objc-convert-messages-to-runtime-calls"
// ENABLE-NOT: "-fno-objc-convert-messages-to-runtime-calls"