From: Joseph Myers <joseph@codesourcery.com>
Date: Wed, 4 Oct 2017 20:32:48 +0000 (+0000)
Subject: Use libm_alias_double for dbl-64 fma.
X-Git-Tag: glibc-2.27~742
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e16a5d1d19effc7b2775942f592520cfff03d92;p=thirdparty%2Fglibc.git

Use libm_alias_double for dbl-64 fma.

This patch makes dbl-64 fma use libm_alias_double.  The ldbl-opt
version is removed.  The sparc32 version no longer needs to handle
compat symbols, while alpha needs a new wrapper to avoid getting the
ldbl-128 version (where ldbl-opt is earlier in the list of sysdeps
directories, so previously fma came from there).

Tested for x86_64, and tested with build-many-glibcs.py that installed
stripped shared libraries are unchanged by the patch.

	* sysdeps/ieee754/dbl-64/s_fma.c: Include <libm-alias-double.h>.
	(fma): Define using libm_alias_double.
	* sysdeps/ieee754/ldbl-opt/s_fma.c: Remove file.
	* sysdeps/sparc/sparc32/fpu/s_fma.c: Do not include
	<math_ldbl_opt.h>.
	(fmal): Do not define as compat symbol here.
	* sysdeps/alpha/fpu/s_fma.c: New file.
---

diff --git a/ChangeLog b/ChangeLog
index 23f2595bcea..4d94f133dc4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2017-10-04  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/ieee754/dbl-64/s_fma.c: Include <libm-alias-double.h>.
+	(fma): Define using libm_alias_double.
+	* sysdeps/ieee754/ldbl-opt/s_fma.c: Remove file.
+	* sysdeps/sparc/sparc32/fpu/s_fma.c: Do not include
+	<math_ldbl_opt.h>.
+	(fmal): Do not define as compat symbol here.
+	* sysdeps/alpha/fpu/s_fma.c: New file.
+
 2017-10-04  Szabolcs Nagy  <szabolcs.nagy@arm.com>
 
 	* sysdeps/aarch64/dl-machine.h (elf_machine_rela): Expand MIN.
diff --git a/sysdeps/alpha/fpu/s_fma.c b/sysdeps/alpha/fpu/s_fma.c
new file mode 100644
index 00000000000..8f626058704
--- /dev/null
+++ b/sysdeps/alpha/fpu/s_fma.c
@@ -0,0 +1,2 @@
+/* Always use dbl-64 version because long double is emulated in software.  */
+#include <sysdeps/ieee754/dbl-64/s_fma.c>
diff --git a/sysdeps/ieee754/dbl-64/s_fma.c b/sysdeps/ieee754/dbl-64/s_fma.c
index 68c8515fb1f..3a5a8858ceb 100644
--- a/sysdeps/ieee754/dbl-64/s_fma.c
+++ b/sysdeps/ieee754/dbl-64/s_fma.c
@@ -22,6 +22,7 @@
 #include <fenv.h>
 #include <ieee754.h>
 #include <math_private.h>
+#include <libm-alias-double.h>
 #include <tininess.h>
 
 /* This implementation uses rounding to odd to avoid problems with
@@ -292,10 +293,5 @@ __fma (double x, double y, double z)
     }
 }
 #ifndef __fma
-weak_alias (__fma, fma)
-#endif
-
-#ifdef NO_LONG_DOUBLE
-strong_alias (__fma, __fmal)
-weak_alias (__fmal, fmal)
+libm_alias_double (__fma, fma)
 #endif
diff --git a/sysdeps/ieee754/ldbl-opt/s_fma.c b/sysdeps/ieee754/ldbl-opt/s_fma.c
deleted file mode 100644
index 1723c5c3063..00000000000
--- a/sysdeps/ieee754/ldbl-opt/s_fma.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/ieee754/dbl-64/s_fma.c>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __fma, fmal, GLIBC_2_1);
-#endif
diff --git a/sysdeps/sparc/sparc32/fpu/s_fma.c b/sysdeps/sparc/sparc32/fpu/s_fma.c
index bfdcb23b3a6..8f626058704 100644
--- a/sysdeps/sparc/sparc32/fpu/s_fma.c
+++ b/sysdeps/sparc/sparc32/fpu/s_fma.c
@@ -1,6 +1,2 @@
 /* Always use dbl-64 version because long double is emulated in software.  */
-#include <math_ldbl_opt.h>
 #include <sysdeps/ieee754/dbl-64/s_fma.c>
-#if LONG_DOUBLE_COMPAT (libm, GLIBC_2_1)
-compat_symbol (libm, __fma, fmal, GLIBC_2_1);
-#endif