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* [gcc(refs/users/meissner/heads/work106)] Use _Float128 and _Complex _Float128 for PowerPC libgcc IEEE 128-bit
@ 2023-01-18 0:09 Michael Meissner
0 siblings, 0 replies; only message in thread
From: Michael Meissner @ 2023-01-18 0:09 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:22dd6dfc52ef1ab02426be4aa436511f53941be0
commit 22dd6dfc52ef1ab02426be4aa436511f53941be0
Author: Michael Meissner <meissner@linux.ibm.com>
Date: Tue Jan 17 19:09:34 2023 -0500
Use _Float128 and _Complex _Float128 for PowerPC libgcc IEEE 128-bit
2023-01-17 Michael Meissner <meissner@linux.ibm.com>
PR target/107299
* config/rs6000/quad-float128.h (TF): Remove definition.
(TFtype): New macro, use _Float128.
(TCtype): Change to macro, use _Complex _Float128.
(__mulkc3): Remove declaration.
(__divkc3): Likewise.
* libgcc2.h (TFtype): Allow md files to override this.
(TCtype): Likewise.
* soft-fp/quad.h (TFtype): Likewise.
Diff:
---
libgcc/config/rs6000/quad-float128.h | 23 +++--------------------
libgcc/libgcc2.h | 4 ++++
libgcc/soft-fp/quad.h | 2 ++
3 files changed, 9 insertions(+), 20 deletions(-)
diff --git a/libgcc/config/rs6000/quad-float128.h b/libgcc/config/rs6000/quad-float128.h
index ae0622c744c..c3f9f48bf97 100644
--- a/libgcc/config/rs6000/quad-float128.h
+++ b/libgcc/config/rs6000/quad-float128.h
@@ -27,22 +27,9 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-/* quad.h defines the TFtype type by:
- typedef float TFtype __attribute__ ((mode (TF)));
-
- This define forces it to use KFmode (aka, ieee 128-bit floating point).
- However, when the compiler's default is changed so that long double is IEEE
- 128-bit floating point, we need to go back to using TFmode and TCmode. */
-#ifndef __LONG_DOUBLE_IEEE128__
-#define TF KF
-
-/* We also need TCtype to represent complex ieee 128-bit float for
- __mulkc3 and __divkc3. */
-typedef __complex float TCtype __attribute__ ((mode (KC)));
-
-#else
-typedef __complex float TCtype __attribute__ ((mode (TC)));
-#endif
+/* Override quad.h's definitions for 128-bit floating point type. */
+#define TFtype _Float128
+#define TCtype _Complex _Float128
/* Force the use of the VSX instruction set. */
#if defined(_ARCH_PPC) && (!defined(__VSX__) || !defined(__FLOAT128__))
@@ -187,10 +174,6 @@ extern UTItype_ppc __fixunskfti (TFtype);
extern IBM128_TYPE __extendkftf2 (TFtype);
extern TFtype __trunctfkf2 (IBM128_TYPE);
-/* Complex __float128 built on __float128 interfaces. */
-extern TCtype __mulkc3 (TFtype, TFtype, TFtype, TFtype);
-extern TCtype __divkc3 (TFtype, TFtype, TFtype, TFtype);
-
/* Convert IEEE 128-bit floating point to/from string. We explicitly use
_Float128 instead of TFmode because _strtokf and _strfromkf must be compiled
with long double being IBM 128. */
diff --git a/libgcc/libgcc2.h b/libgcc/libgcc2.h
index fc24ac34502..6a249877c7a 100644
--- a/libgcc/libgcc2.h
+++ b/libgcc/libgcc2.h
@@ -156,9 +156,13 @@ typedef float XFtype __attribute__ ((mode (XF)));
typedef _Complex float XCtype __attribute__ ((mode (XC)));
#endif
#if LIBGCC2_HAS_TF_MODE
+#ifndef TFtype
typedef float TFtype __attribute__ ((mode (TF)));
+#endif
+#ifndef TCtype
typedef _Complex float TCtype __attribute__ ((mode (TC)));
#endif
+#endif
typedef int cmp_return_type __attribute__((mode (__libgcc_cmp_return__)));
typedef int shift_count_type __attribute__((mode (__libgcc_shift_count__)));
diff --git a/libgcc/soft-fp/quad.h b/libgcc/soft-fp/quad.h
index 3889bb44f1f..71f87d36ba9 100644
--- a/libgcc/soft-fp/quad.h
+++ b/libgcc/soft-fp/quad.h
@@ -65,7 +65,9 @@
#define _FP_HIGHBIT_DW_Q \
((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_Q - 1) % _FP_W_TYPE_SIZE)
+#ifndef TFtype
typedef float TFtype __attribute__ ((mode (TF)));
+#endif
#if _FP_W_TYPE_SIZE < 64
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