From 677b9150f54a0483d3de1182ac40717b7c4431a5 Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Wed, 23 Sep 2020 20:15:39 +0930
Subject: [PATCH] [RS6000] Built-in __PCREL__ define
Useful in assembly to know details of power10 function calls.
* config/rs6000/rs6000-c.c (rs6000_target_modify_macros):
Conditionally define __PCREL__.
---
gcc/config/rs6000/rs6000-c.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/gcc/config/rs6000/rs6000-c.c b/gcc/config/rs6000/rs6000-c.c
index f5982907e907..cc1e997524e3 100644
--- a/gcc/config/rs6000/rs6000-c.c
+++ b/gcc/config/rs6000/rs6000-c.c
@@ -597,6 +597,9 @@ rs6000_target_modify_macros (bool define_p, HOST_WIDE_INT flags,
/* Tell the user if we support the MMA instructions. */
if ((flags & OPTION_MASK_MMA) != 0)
rs6000_define_or_undefine_macro (define_p, "__MMA__");
+ /* Whether pc-relative code is being generated. */
+ if ((flags & OPTION_MASK_PCREL) != 0)
+ rs6000_define_or_undefine_macro (define_p, "__PCREL__");
}
void
--
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