---
This patch was approved:
https://gcc.gnu.org/ml/gcc-patches/2016-09/msg02401.html
---
Hi,
We've removed all uses of TARGET_FLT_EVAL_METHOD, so we can remove it
and poison it.
Bootstrapped and tested on x86-64 and AArch64. Tested on s390 and m68k
to the best of my ability (no execute tests).
Thanks,
James
---
gcc/
2016-11-09 James Greenhalgh <[email protected]>
* config/s390/s390.h (TARGET_FLT_EVAL_METHOD): Delete.
* config/m68k/m68k.h (TARGET_FLT_EVAL_METHOD): Delete.
* config/i386/i386.h (TARGET_FLT_EVAL_METHOD): Delete.
* defaults.h (TARGET_FLT_EVAL_METHOD): Delete.
* doc/tm.texi.in (TARGET_FLT_EVAL_METHOD): Delete.
* doc/tm.texi: Regenerate.
* system.h (TARGET_FLT_EVAL_METHOD): Poison.
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index add7a64..a2fcdcc 100644
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -686,17 +686,6 @@ extern const char *host_detect_local_cpu (int argc, const char **argv);
SUBTARGET_EXTRA_SPECS
-/* Set the value of FLT_EVAL_METHOD in float.h. When using only the
- FPU, assume that the fpcw is set to extended precision; when using
- only SSE, rounding is correct; when using both SSE and the FPU,
- the rounding precision is indeterminate, since either may be chosen
- apparently at random. */
-#define TARGET_FLT_EVAL_METHOD \
- (TARGET_80387 \
- ? (TARGET_MIX_SSE_I387 ? -1 \
- : (TARGET_SSE_MATH ? (TARGET_SSE2 ? 0 : -1) : 2)) \
- : 0)
-
/* Whether to allow x87 floating-point arithmetic on MODE (one of
SFmode, DFmode and XFmode) in the current excess precision
configuration. */
diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h
index 2aa858f..2021e9d 100644
--- a/gcc/config/m68k/m68k.h
+++ b/gcc/config/m68k/m68k.h
@@ -281,11 +281,6 @@ along with GCC; see the file COPYING3. If not see
#define LONG_DOUBLE_TYPE_SIZE \
((TARGET_COLDFIRE || TARGET_FIDOA) ? 64 : 80)
-/* Set the value of FLT_EVAL_METHOD in float.h. When using 68040 fp
- instructions, we get proper intermediate rounding, otherwise we
- get extended precision results. */
-#define TARGET_FLT_EVAL_METHOD ((TARGET_68040 || ! TARGET_68881) ? 0 : 2)
-
#define BITS_BIG_ENDIAN 1
#define BYTES_BIG_ENDIAN 1
#define WORDS_BIG_ENDIAN 1
diff --git a/gcc/config/s390/s390.h b/gcc/config/s390/s390.h
index 501c8e4..6be4d34 100644
--- a/gcc/config/s390/s390.h
+++ b/gcc/config/s390/s390.h
@@ -247,11 +247,6 @@ extern const char *s390_host_detect_local_cpu (int argc, const char **argv);
#define S390_TDC_INFINITY (S390_TDC_POSITIVE_INFINITY \
| S390_TDC_NEGATIVE_INFINITY )
-/* This is used by float.h to define the float_t and double_t data
- types. For historical reasons both are double on s390 what cannot
- be changed anymore. */
-#define TARGET_FLT_EVAL_METHOD 1
-
/* Target machine storage layout. */
/* Everything is big-endian. */
diff --git a/gcc/defaults.h b/gcc/defaults.h
index 9c40002..2536f76 100644
--- a/gcc/defaults.h
+++ b/gcc/defaults.h
@@ -942,9 +942,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
#endif
-#ifndef TARGET_FLT_EVAL_METHOD
-#define TARGET_FLT_EVAL_METHOD 0
-#endif
#ifndef TARGET_DEC_EVAL_METHOD
#define TARGET_DEC_EVAL_METHOD 2
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index fecb08c..13e66f7 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -1566,13 +1566,6 @@ uses this macro should also arrange to use @file{t-gnu-prefix} in
the libgcc @file{config.host}.
@end defmac
-@defmac TARGET_FLT_EVAL_METHOD
-A C expression for the value for @code{FLT_EVAL_METHOD} in @file{float.h},
-assuming, if applicable, that the floating-point control word is in its
-default state. If you do not define this macro the value of
-@code{FLT_EVAL_METHOD} will be zero.
-@end defmac
-
@defmac WIDEST_HARDWARE_FP_SIZE
A C expression for the size in bits of the widest floating-point format
supported by the hardware. If you define this macro, you must specify a
diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
index 03758b5..7f75a44 100644
--- a/gcc/doc/tm.texi.in
+++ b/gcc/doc/tm.texi.in
@@ -1402,13 +1402,6 @@ uses this macro should also arrange to use @file{t-gnu-prefix} in
the libgcc @file{config.host}.
@end defmac
-@defmac TARGET_FLT_EVAL_METHOD
-A C expression for the value for @code{FLT_EVAL_METHOD} in @file{float.h},
-assuming, if applicable, that the floating-point control word is in its
-default state. If you do not define this macro the value of
-@code{FLT_EVAL_METHOD} will be zero.
-@end defmac
-
@defmac WIDEST_HARDWARE_FP_SIZE
A C expression for the size in bits of the widest floating-point format
supported by the hardware. If you define this macro, you must specify a
diff --git a/gcc/system.h b/gcc/system.h
index 8c6127c..6319f57 100644
--- a/gcc/system.h
+++ b/gcc/system.h
@@ -896,7 +896,7 @@ extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE \
LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE \
CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P \
- STORE_BY_PIECES_P
+ STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD
/* Target macros only used for code built for the target, that have
moved to libgcc-tm.h or have never been present elsewhere. */
