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* [gcc(refs/vendors/ARM/heads/morello)] Implement valid-pointer-mode for aarch64
@ 2022-05-05 12:04 Matthew Malcomson
0 siblings, 0 replies; only message in thread
From: Matthew Malcomson @ 2022-05-05 12:04 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:9336ef23d4c7324d7269417d21ba2f7fc0a60057
commit 9336ef23d4c7324d7269417d21ba2f7fc0a60057
Author: Matthew Malcomson <matthew.malcomson@arm.com>
Date: Thu Mar 17 15:49:20 2022 +0000
Implement valid-pointer-mode for aarch64
This allows capability versions of Pmode and ptr_mode as well as the
standard versions.
Diff:
---
gcc/config/aarch64/aarch64.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 05b78dac74c..53b6956e78a 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -24777,6 +24777,24 @@ aarch64_capabilities_in_hardware (void)
return false;
}
+/* Implement TARGET_VALID_POINTER_MODE hook. */
+bool
+aarch64_valid_pointer_mode (scalar_addr_mode mode)
+{
+ /* For Hybrid Morello we support two valid pointer modes:
+ - DImode == Pmode == ptr_mode for all normal integer pointers.
+ - CADImode forcapability pointers.
+ In order to return "valid" on both of them, we check against the
+ offset mode. */
+ if (TARGET_CAPABILITY_HYBRID)
+ {
+ scalar_addr_mode omode = offset_mode (mode);
+ return (omode == Pmode || omode == ptr_mode);
+ }
+ else
+ return (mode == Pmode || mode == ptr_mode);
+}
+
/* Implement the TARGET_DWARF_FRAME_REG_MODE target hook. This only has an
impact in Hybrid Capability Morello compilation, where the default
raw_reg_mode returned would still be CADImode, but we want to use DImode
@@ -25418,6 +25436,9 @@ aarch64_libgcc_floating_mode_supported_p
#undef TARGET_ASM_DECLARE_CONSTANT_NAME
#define TARGET_ASM_DECLARE_CONSTANT_NAME aarch64_declare_constant_name
+#undef TARGET_VALID_POINTER_MODE
+#define TARGET_VALID_POINTER_MODE aarch64_valid_pointer_mode
+
#undef TARGET_UNWIND_WORD_MODE
#define TARGET_UNWIND_WORD_MODE aarch64_unwind_word_mode
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