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13a0a38fe0
This patch implements support for selectively disabling optimizations on a
range of function definitions through a pragma. The implementation is that
all function definitions in the range are decorated with attribute
'optnone'.
#pragma clang optimize off
// All function definitions in here are decorated with 'optnone'.
#pragma clang optimize on
// Compilation resumes as normal.
llvm-svn: 209510
29 lines
954 B
C++
29 lines
954 B
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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#pragma clang optimize off
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#pragma clang optimize on
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// Extra arguments
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#pragma clang optimize on top of spaghetti // expected-error {{unexpected extra argument 'top' to '#pragma clang optimize'}}
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// Wrong argument
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#pragma clang optimize something_wrong // expected-error {{unexpected argument 'something_wrong' to '#pragma clang optimize'; expected 'on' or 'off'}}
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// No argument
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#pragma clang optimize // expected-error {{missing argument to '#pragma clang optimize'; expected 'on' or 'off'}}
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// Check that macros can be used in the pragma
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#define OFF off
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#define ON on
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#pragma clang optimize OFF
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#pragma clang optimize ON
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// Check that _Pragma can also be used to address the use case where users want
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// to define optimization control macros to abstract out which compiler they are
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// using.
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#define OPT_OFF _Pragma("clang optimize off")
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#define OPT_ON _Pragma("clang optimize on")
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OPT_OFF
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OPT_ON
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