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From: "i at maskray dot me" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug driver/100937] New: configure: Add
 --enable-default-semantic-interposition
Date: Sun, 06 Jun 2021 23:10:38 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100937

            Bug ID: 100937
           Summary: configure: Add --enable-default-semantic-interposition
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: driver
          Assignee: unassigned at gcc dot gnu.org
          Reporter: i at maskray dot me
  Target Milestone: ---

Add a configure option --enable-default-semantic-interposition to customize
-f(no-)semantic-interposition default.

The suppression of interprocedural optimizations and inlining for such
default visibility non-vague-linkage function definitions is the biggest
difference between -fPIE/-fPIC.

Distributions may want to enable default -fno-semantic-interposition to
reclaim the lost performance from -fPIC (e.g. CPython is said to be 27% fas=
ter;
Clang is 3% faster).=