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This shouldn't affect codegen for -O0 compiles as tail call markers are not emitted in unoptimized compiles. Testing with the external/internal nightly test suite reveals no change in compile time performance. Testing with -O1, -O2 and -O3 with fast-isel enabled did not cause any compile-time or execution-time failures. All tests were performed on my x86 machine. I'll monitor our arm testers to ensure no regressions occur there. In an upcoming clang patch I will be marking the objc_autoreleaseReturnValue and objc_retainAutoreleaseReturnValue as tail calls unconditionally. While it's theoretically true that this is just an optimization, it's an optimization that we very much want to happen even at -O0, or else ARC applications become substantially harder to debug. Part of rdar://12553082 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169796 91177308-0d34-0410-b5e6-96231b3b80d8 |
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Analysis | ||
Archive | ||
Assembler | ||
Bindings/Ocaml | ||
Bitcode | ||
BugPoint | ||
CodeGen | ||
DebugInfo | ||
ExecutionEngine | ||
Feature | ||
FileCheck | ||
Instrumentation | ||
Integer | ||
JitListener | ||
Linker | ||
MC | ||
Object | ||
Other | ||
Scripts | ||
TableGen | ||
tools | ||
Transforms | ||
Unit | ||
Verifier | ||
YAMLParser | ||
CMakeLists.txt | ||
lit.cfg | ||
lit.site.cfg.in | ||
Makefile | ||
Makefile.tests | ||
TestRunner.sh |