alpha: Add -mieee-with-inexact for fma compilation

diff --git a/ChangeLog.alpha b/ChangeLog.alpha
index 72e102ac8a5734c56d9f1513e13c0fc76811b89d..48f3b97056c5bad52516dcf6bff1ad97f0c576b6 100644 (file)
--- a/ChangeLog.alpha
+++ b/ChangeLog.alpha
@@ -1,5 +1,9 @@
 2012-05-30  Richard Henderson  <rth@twiddle.net>
 
+       * sysdeps/alpha/Makefile (CFLAGS-s_fma.c): Set -mieee-with-inexact.
+       (CFLAGS-s_fmaf.c): Likewise.
+       * sysdeps/alpha/fpu/libm-test-ulps: Regenerate.
+
        * sysdeps/unix/sysv/linux/alpha/brk.S: Fix error path for PIC.
 
        * sysdeps/alpha/fpu/libm-test-ulps: Regenerate.

diff --git a/sysdeps/alpha/Makefile b/sysdeps/alpha/Makefile
index b08f69d9977aef03aaeab873a6e1784a264b4bf6..17fd3b84d7275d3646a56bf849c33e3879c74742 100644 (file)
--- a/sysdeps/alpha/Makefile
+++ b/sysdeps/alpha/Makefile
@@ -37,6 +37,12 @@ ifeq ($(subdir),elf)
 CFLAGS-rtld.c = -mbuild-constants
 endif
 
+ifeq ($(subdir),math)
+# The fma routines rely on inexact being raised for correct results.
+CFLAGS-s_fma.c = -mieee-with-inexact
+CFLAGS-s_fmaf.c = -mieee-with-inexact
+endif
+
 # Build everything with full IEEE math support, and with dynamic rounding;
 # there are a number of math routines that are defined to work with the
 # "current" rounding mode, and it's easiest to set this with all of them.

diff --git a/sysdeps/alpha/fpu/libm-test-ulps b/sysdeps/alpha/fpu/libm-test-ulps
index 39884260a8fb24d3658d35fbcdb10b9d188ee2e7..908154c4e88e4ef47b6254dc98c367ee25777771 100644 (file)
--- a/sysdeps/alpha/fpu/libm-test-ulps
+++ b/sysdeps/alpha/fpu/libm-test-ulps
@@ -1615,20 +1615,6 @@ Test "expm1 (500.0) == 1.4035922178528374107397703328409120821806e+217":
 double: 1
 idouble: 1
 
-# fma
-Test "fma (-0x1.19cab66d73e17p-959, 0x1.c7108a8c5ff51p-107, -0x0.80b0ad65d9b64p-1022) == -0x0.80b0ad65d9d59p-1022":
-double: 1
-idouble: 1
-Test "fma (0x1.0000002p+0, 0x1.ffffffcp-1, -0x1p-300) == 0x1.fffffffffffffp-1":
-double: 1
-idouble: 1
-Test "fma (0x1.153d650bb9f06p-907, 0x1.2d01230d48407p-125, -0x0.b278d5acfc3cp-1022) == -0x0.b22757123bbe9p-1022":
-double: 1
-idouble: 1
-Test "fma (0x1.4000004p-967, 0x1p-106, 0x0.000001p-1022) == 0x0.0000010000003p-1022":
-double: 1
-idouble: 1
-
 # gamma
 Test "gamma (-0.5) == log(2*sqrt(pi))":
 ildouble: 1