[PATCH 36/52] aarch64: New hook implementation aarch64_c_mode_for_floating_type

[Kewen Lin]

This is to remove macros {FLOAT,{,LONG_}DOUBLE}_TYPE_SIZE
defines in aarch64 port, and add new port specific hook
implementation aarch64_c_mode_for_floating_type.

gcc/ChangeLog:

        * config/aarch64/aarch64.cc (aarch64_c_mode_for_floating_type):
        New function.
        (TARGET_C_MODE_FOR_FLOATING_TYPE): New macro.
        * config/aarch64/aarch64.h (FLOAT_TYPE_SIZE): Remove.
        (DOUBLE_TYPE_SIZE): Likewise.
        (LONG_DOUBLE_TYPE_SIZE): Likewise.
---
 gcc/config/aarch64/aarch64.cc | 15 +++++++++++++++
 gcc/config/aarch64/aarch64.h  |  6 ------
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index ee12d8897a8..1c1c278fd69 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -28427,6 +28427,18 @@ aarch64_bitint_type_info (int n, struct bitint_info 
*info)
   return true;
 }
 
+/* Implement TARGET_C_MODE_FOR_FLOATING_TYPE.  Return TFmode for
+   TI_LONG_DOUBLE_TYPE which is for long double type, go with the default
+   one for the others.  */
+
+static machine_mode
+aarch64_c_mode_for_floating_type (enum tree_index ti)
+{
+  if (ti == TI_LONG_DOUBLE_TYPE)
+    return TFmode;
+  return default_mode_for_floating_type (ti);
+}
+
 /* Implement TARGET_SCHED_CAN_SPECULATE_INSN.  Return true if INSN can be
    scheduled for speculative execution.  Reject the long-running division
    and square-root instructions.  */
@@ -30554,6 +30566,9 @@ aarch64_run_selftests (void)
 #undef TARGET_C_BITINT_TYPE_INFO
 #define TARGET_C_BITINT_TYPE_INFO aarch64_bitint_type_info
 
+#undef TARGET_C_MODE_FOR_FLOATING_TYPE
+#define TARGET_C_MODE_FOR_FLOATING_TYPE aarch64_c_mode_for_floating_type
+
 #undef  TARGET_EXPAND_BUILTIN
 #define TARGET_EXPAND_BUILTIN aarch64_expand_builtin
 
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index bbf11faaf4b..2064c23f961 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -96,12 +96,6 @@
 
 #define LONG_LONG_TYPE_SIZE    64
 
-#define FLOAT_TYPE_SIZE                32
-
-#define DOUBLE_TYPE_SIZE       64
-
-#define LONG_DOUBLE_TYPE_SIZE  128
-
 /* This value is the amount of bytes a caller is allowed to drop the stack
    before probing has to be done for stack clash protection.  */
 #define STACK_CLASH_CALLER_GUARD 1024
-- 
2.43.0