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Disable early inlining while compiling for coverage (issue5173042)
- From: singhai at google dot com (Sharad Singhai)
- To: reply at codereview dot appspotmail dot com, davidxl at google dot com, gcc-patches at gcc dot gnu dot org
- Date: Fri, 30 Sep 2011 18:12:36 -0700 (PDT)
- Subject: Disable early inlining while compiling for coverage (issue5173042)
This patch disables early inlining when --coverage option is
specified. This improves coverage data in presence of other
optimizations, specially with -O2 where early inlining changes the
control flow graph sufficiently enough to generate seemingly very odd
source coverage.
Bootstrapped okay and regression tests passed.
Okay for google/gcc-4_6?
2011-09-30 Sharad Singhai <singhai@google.com>
* gcc.c (cc1_options): Added -fno-early-inlining for coverage.
Index: gcc.c
===================================================================
--- gcc.c (revision 179402)
+++ gcc.c (working copy)
@@ -776,7 +776,7 @@
%{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
%{fsyntax-only:-o %j} %{-param*}\
%{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
- %{coverage:-fprofile-arcs -ftest-coverage}";
+ %{coverage:-fprofile-arcs -ftest-coverage -fno-early-inlining}";
/* If an assembler wrapper is used to invoke post-assembly tools
like MAO, --save-temps need to be passed to save the output of
--
This patch is available for review at http://codereview.appspot.com/5173042