+2012-07-18 Oleg Endo <olegendo@gcc.gnu.org>
+
+ 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.
+
2012-07-18 Steven Bosscher <steven@gcc.gnu.org>
* graphite-poly.c (print_pbb_body): Fixup dump_bb call.
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)
&& flag_unsafe_math_optimizations
&& flag_finite_math_only;
+ /* 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);
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)
-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
-mindexed-addressing -mgettrcost=@var{number} -mpt-fixed @gol
-maccumulate-outgoing-args -minvalid-symbols -msoft-atomic -mhard-atomic @gol
@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
+2012-07-18 Oleg Endo <olegendo@gcc.gnu.org>
+
+ PR target/33135
+ * gcc.target/sh/pr33135-1.c: New.
+ * gcc.target/sh/pr33135-2.c: New.
+ * gcc.target/sh/pr33135-3.c: New.
+ * gcc.target/sh/pr33135-4.c: New.
+
2012-07-17 Jason Merrill <jason@redhat.com>
PR c++/53995
--- /dev/null
+/* Check that fcmp/eq and fcmp/gt instructions are generated by default
+ (implicit -mieee). */
+/* { dg-do compile { target "sh*-*-*" } } */
+/* { dg-options "-O1" } */
+/* { dg-skip-if "" { "sh*-*-*" } { "-m1" "-m2" "-m3" "-m4al" "*nofpu" "-m4-340*" "-m4-400*" "-m4-500*" "-m5*" } { "" } } */
+/* { dg-final { scan-assembler-times "fcmp/eq" 4 } } */
+/* { dg-final { scan-assembler-times "fcmp/gt" 4 } } */
+
+int
+test_00 (float a, float b)
+{
+ return a <= b;
+}
+
+int
+test_01 (float a, float b)
+{
+ return a >= b;
+}
+
+int
+test_02 (double a, double b)
+{
+ return a <= b;
+}
+
+int
+test_03 (double a, double b)
+{
+ return a >= b;
+}
+
--- /dev/null
+/* Check that only the fcmp/gt instruction is generated when specifying
+ -ffinite-math-only (implicit -mno-ieee). */
+/* { dg-do compile { target "sh*-*-*" } } */
+/* { dg-options "-O1 -ffinite-math-only" } */
+/* { dg-skip-if "" { "sh*-*-*" } { "-m1" "-m2" "-m3" "-m4al" "*nofpu" "-m4-340*" "-m4-400*" "-m4-500*" "-m5*" } { "" } } */
+/* { dg-final { scan-assembler-not "fcmp/eq" } } */
+/* { dg-final { scan-assembler-times "fcmp/gt" 4 } } */
+
+int
+test_00 (float a, float b)
+{
+ return a <= b;
+}
+
+int
+test_01 (float a, float b)
+{
+ return a >= b;
+}
+
+int
+test_02 (double a, double b)
+{
+ return a <= b;
+}
+
+int
+test_03 (double a, double b)
+{
+ return a >= b;
+}
+
--- /dev/null
+/* Check that fcmp/eq and fcmp/gt instructions are generated when specifying
+ -ffinite-math-only and -mieee. */
+/* { dg-do compile { target "sh*-*-*" } } */
+/* { dg-options "-O1 -ffinite-math-only -mieee" } */
+/* { dg-skip-if "" { "sh*-*-*" } { "-m1" "-m2" "-m3" "-m4al" "*nofpu" "-m4-340*" "-m4-400*" "-m4-500*" "-m5*" } { "" } } */
+/* { dg-final { scan-assembler-times "fcmp/eq" 4 } } */
+/* { dg-final { scan-assembler-times "fcmp/gt" 4 } } */
+
+int
+test_00 (float a, float b)
+{
+ return a <= b;
+}
+
+int
+test_01 (float a, float b)
+{
+ return a >= b;
+}
+
+int
+test_02 (double a, double b)
+{
+ return a <= b;
+}
+
+int
+test_03 (double a, double b)
+{
+ return a >= b;
+}
+
--- /dev/null
+/* Check that only the fcmp/gt instruction is generated when specifying
+ -fno-finite-math-only and -mno-ieee. */
+/* { dg-do compile { target "sh*-*-*" } } */
+/* { dg-options "-O1 -fno-finite-math-only -mno-ieee" } */
+/* { dg-skip-if "" { "sh*-*-*" } { "-m1" "-m2" "-m3" "-m4al" "*nofpu" "-m4-340*" "-m4-400*" "-m4-500*" "-m5*" } { "" } } */
+/* { dg-final { scan-assembler-not "fcmp/eq" } } */
+/* { dg-final { scan-assembler-times "fcmp/gt" 4 } } */
+
+int
+test_00 (float a, float b)
+{
+ return a <= b;
+}
+
+int
+test_01 (float a, float b)
+{
+ return a >= b;
+}
+
+int
+test_02 (double a, double b)
+{
+ return a <= b;
+}
+
+int
+test_03 (double a, double b)
+{
+ return a >= b;
+}
+
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