[gentoo-commits] gentoo commit in src/patchsets/gcc/4.6.1/gentoo: 40_all_superh-mieee-default-fix-pr33135.patch README.history

[Mike Frysinger (vapier)]

vapier      12/11/25 03:33:55

  Modified:             README.history
  Added:                40_all_superh-mieee-default-fix-pr33135.patch
  Log:
  add fix from upstream for -fno-finite-math-only handling on SuperH PR33135 #439988

Revision  Changes    Path
1.14                 src/patchsets/gcc/4.6.1/gentoo/README.history

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.6.1/gentoo/README.history?rev=1.14&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.6.1/gentoo/README.history?rev=1.14&content-type=text/plain
diff : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.6.1/gentoo/README.history?r1=1.13&r2=1.14

Index: README.history
===================================================================
RCS file: /var/cvsroot/gentoo/src/patchsets/gcc/4.6.1/gentoo/README.history,v
retrieving revision 1.13
retrieving revision 1.14
diff -u -r1.13 -r1.14
--- README.history	25 Nov 2012 03:06:41 -0000	1.13
+++ README.history	25 Nov 2012 03:33:55 -0000	1.14
@@ -1,6 +1,7 @@
 1.2		[pending]
 	- 03_all_java-nomulti.patch
 	+ 39_all_cond-store-pr452445.patch
+	+ 40_all_superh-mieee-default-fix-pr33135.patch
 
 1.1		27 Sep 2012
 	+ 05_all_gcc-4.6.x-siginfo.patch



1.1                  src/patchsets/gcc/4.6.1/gentoo/40_all_superh-mieee-default-fix-pr33135.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.6.1/gentoo/40_all_superh-mieee-default-fix-pr33135.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.6.1/gentoo/40_all_superh-mieee-default-fix-pr33135.patch?rev=1.1&content-type=text/plain

Index: 40_all_superh-mieee-default-fix-pr33135.patch
===================================================================
https://bugs.gentoo.org/439988
http://gcc.gnu.org/PR33135

From 5600384da45f999b6088ce92a12e707564f6cf61 Mon Sep 17 00:00:00 2001
From: olegendo <olegendo@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 22 Jul 2012 23:49:56 +0000
Subject: [PATCH] 	PR target/33135 	* config/sh/sh.opt (mieee):
 Use Var instead of Mask.  Correct 	description. 	*
 config/sh/sh.c (sh_option_override): Do not change 
 flag_finite_math_only.  Set TARGET_IEEE to complement of 
 flag_finite_math_only. 	* doc/invoke.texi (SH
 options): Add mno-ieee.  Correct 	description of mieee
 and mno-ieee behavior.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@189762 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/ChangeLog        | 11 +++++++++++
 gcc/config/sh/sh.c   | 10 +++++-----
 gcc/config/sh/sh.opt |  4 ++--
 gcc/doc/invoke.texi  | 18 ++++++++++--------
 4 files changed, 28 insertions(+), 15 deletions(-)

diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c
index 39ef00d..11e537b 100644
--- a/gcc/config/sh/sh.c
+++ b/gcc/config/sh/sh.c
@@ -763,11 +763,6 @@ sh_option_override (void)
   SUBTARGET_OVERRIDE_OPTIONS;
   if (optimize > 1 && !optimize_size)
     target_flags |= MASK_SAVE_ALL_TARGET_REGS;
-  if (flag_finite_math_only == 2)
-    flag_finite_math_only
-      = !flag_signaling_nans && TARGET_SH2E && ! TARGET_IEEE;
-  if (TARGET_SH2E && !flag_finite_math_only)
-    target_flags |= MASK_IEEE;
   sh_cpu = PROCESSOR_SH1;
   assembler_dialect = 0;
   if (TARGET_SH2)
@@ -1007,6 +1002,11 @@ sh_option_override (void)
 	align_functions = min_align;
     }
 
+  /* If the -mieee option was not explicitly set by the user, turn it on
+     unless -ffinite-math-only was specified.  See also PR 33135.  */
+  if (! global_options_set.x_TARGET_IEEE)
+    TARGET_IEEE = ! flag_finite_math_only;
+
   if (sh_fixed_range_str)
     sh_fix_range (sh_fixed_range_str);
 
diff --git a/gcc/config/sh/sh.opt b/gcc/config/sh/sh.opt
index 99a6373..8464bd7 100644
--- a/gcc/config/sh/sh.opt
+++ b/gcc/config/sh/sh.opt
@@ -270,8 +270,8 @@ Target Report RejectNegative Mask(HITACHI)
 Follow Renesas (formerly Hitachi) / SuperH calling conventions
 
 mieee
-Target Report Mask(IEEE)
-Increase the IEEE compliance for floating-point code
+Target Var(TARGET_IEEE)
+Increase the IEEE compliance for floating-point comparisons
 
 mindexed-addressing
 Target Report Mask(ALLOW_INDEXED_ADDRESS) Condition(SUPPORT_ANY_SH5_32MEDIA)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 4ed31b6..9cd24ad 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -853,8 +853,8 @@ See RS/6000 and PowerPC Options.
 -m5-compact  -m5-compact-nofpu @gol
 -mb  -ml  -mdalign  -mrelax @gol
 -mbigtable -mfmovd -mhitachi -mrenesas -mno-renesas -mnomacsave @gol
--mieee  -mbitops  -misize  -minline-ic_invalidate -mpadstruct  -mspace @gol
--mprefergot  -musermode -multcost=@var{number} -mdiv=@var{strategy} @gol
+-mieee -mno-ieee -mbitops  -misize  -minline-ic_invalidate -mpadstruct @gol
+-mspace -mprefergot  -musermode -multcost=@var{number} -mdiv=@var{strategy} @gol
 -mdivsi3_libfunc=@var{name} -mfixed-range=@var{register-range} @gol
 -madjust-unroll -mindexed-addressing -mgettrcost=@var{number} -mpt-fixed @gol
 -maccumulate-outgoing-args -minvalid-symbols}
@@ -16938,13 +16938,15 @@ Mark the @code{MAC} register as call-clobbered, even if
 @option{-mhitachi} is given.
 
 @item -mieee
+@item -mno-ieee
 @opindex mieee
-Increase IEEE-compliance of floating-point code.
-At the moment, this is equivalent to @option{-fno-finite-math-only}.
-When generating 16 bit SH opcodes, getting IEEE-conforming results for
-comparisons of NANs / infinities incurs extra overhead in every
-floating point comparison, therefore the default is set to
-@option{-ffinite-math-only}.
+@opindex mnoieee
+Control the IEEE compliance of floating-point comparisons, which affects the
+handling of cases where the result of a comparison is unordered.  By default
+@option{-mieee} is implicitly enabled.  If @option{-ffinite-math-only} is
+enabled @option{-mno-ieee} is implicitly set, which results in faster
+floating-point greater-equal and less-equal comparisons.  The implcit settings
+can be overridden by specifying either @option{-mieee} or @option{-mno-ieee}.
 
 @item -minline-ic_invalidate
 @opindex minline-ic_invalidate
-- 
1.7.12.4