[PATCH 44/52] s390: New hook implementation s390_c_mode_for_floating_type

[Kewen Lin]

This is to remove macros {FLOAT,{,LONG_}DOUBLE}_TYPE_SIZE
defines in s390 port, and add new port specific hook
implementation s390_c_mode_for_floating_type.

gcc/ChangeLog:

        * config/s390/s390.cc (s390_c_mode_for_floating_type): New function.
        (TARGET_C_MODE_FOR_FLOATING_TYPE): New macro.
        * config/s390/s390.h (FLOAT_TYPE_SIZE): Remove.
        (DOUBLE_TYPE_SIZE): Likewise.
        (LONG_DOUBLE_TYPE_SIZE): Likewise.
---
 gcc/config/s390/s390.cc | 15 +++++++++++++++
 gcc/config/s390/s390.h  |  3 ---
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/gcc/config/s390/s390.cc b/gcc/config/s390/s390.cc
index fa517bd3e77..117da36b3c0 100644
--- a/gcc/config/s390/s390.cc
+++ b/gcc/config/s390/s390.cc
@@ -18066,6 +18066,18 @@ s390_noce_conversion_profitable_p (rtx_insn *seq, 
struct noce_if_info *if_info)
   return default_noce_conversion_profitable_p (seq, if_info);
 }
 
+/* Implement TARGET_C_MODE_FOR_FLOATING_TYPE.  Return TFmode or DFmode
+   for TI_LONG_DOUBLE_TYPE which is for long double type, go with the
+   default one for the others.  */
+
+static machine_mode
+s390_c_mode_for_floating_type (enum tree_index ti)
+{
+  if (ti == TI_LONG_DOUBLE_TYPE)
+    return TARGET_LONG_DOUBLE_128 ? TFmode : DFmode;
+  return default_mode_for_floating_type (ti);
+}
+
 /* Initialize GCC target structure.  */
 
 #undef  TARGET_ASM_ALIGNED_HI_OP
@@ -18382,6 +18394,9 @@ s390_noce_conversion_profitable_p (rtx_insn *seq, 
struct noce_if_info *if_info)
 #undef TARGET_NOCE_CONVERSION_PROFITABLE_P
 #define TARGET_NOCE_CONVERSION_PROFITABLE_P s390_noce_conversion_profitable_p
 
+#undef TARGET_C_MODE_FOR_FLOATING_TYPE
+#define TARGET_C_MODE_FOR_FLOATING_TYPE s390_c_mode_for_floating_type
+
 struct gcc_target targetm = TARGET_INITIALIZER;
 
 #include "gt-s390.h"
diff --git a/gcc/config/s390/s390.h b/gcc/config/s390/s390.h
index 0e6666a8802..4a4dde1a9ba 100644
--- a/gcc/config/s390/s390.h
+++ b/gcc/config/s390/s390.h
@@ -396,9 +396,6 @@ extern const char *s390_host_detect_local_cpu (int argc, 
const char **argv);
 #define INT_TYPE_SIZE 32
 #define LONG_TYPE_SIZE (TARGET_64BIT ? 64 : 32)
 #define LONG_LONG_TYPE_SIZE 64
-#define FLOAT_TYPE_SIZE 32
-#define DOUBLE_TYPE_SIZE 64
-#define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
 
 /* Work around target_flags dependency in ada/targtyps.cc.  */
 #define WIDEST_HARDWARE_FP_SIZE 64
-- 
2.43.0