public inbox for gcc-patches@gcc.gnu.org
 help / color / mirror / Atom feed
From: Vineet Gupta <vineetg@rivosinc.com>
To: gcc-patches@gcc.gnu.org
Cc: kito.cheng@gmail.com, jim.wilson.gcc@gmail.com,
	"Palmer Dabbelt" <palmer@rivosinc.com>,
	"Philipp Tomsich" <philipp.tomsich@vrull.eu>,
	"Christoph Müllner" <christoph.muellner@vrull.eu>,
	collison@rivosinc.com, gnu-toolchain@rivosinc.com,
	"Vineet Gupta" <vineetg@rivosinc.com>
Subject: [PATCH] RISC-V: make USE_LOAD_ADDRESS_MACRO easier to understand
Date: Fri,  2 Sep 2022 16:08:20 -0700	[thread overview]
Message-ID: <20220902230820.381916-1-vineetg@rivosinc.com> (raw)
In-Reply-To: <51ff4d6d-16be-579a-3a84-3f383c8d038e@rivosinc.com>

The current macro has several && and || making it really hard to understand
the first time.

Signed-off-by: Vineet Gupta <vineetg@rivosinc.com>
---
Since we are on this topic, perhaps get this simplification too.

But I'm not sure if the current checking of local symbol can be simplified
a bit. Isn't the first line enough for GET_CODE == const case too ?

---
 gcc/config/riscv/riscv.h | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/gcc/config/riscv/riscv.h b/gcc/config/riscv/riscv.h
index eb1284e56d69..3e3f67ef8270 100644
--- a/gcc/config/riscv/riscv.h
+++ b/gcc/config/riscv/riscv.h
@@ -749,18 +749,19 @@ typedef struct {
 #define CASE_VECTOR_MODE SImode
 #define CASE_VECTOR_PC_RELATIVE (riscv_cmodel != CM_MEDLOW)
 
+#define LOCAL_SYM(sym)							\
+     ((SYMBOL_REF_P (sym) && SYMBOL_REF_LOCAL_P (sym))			\
+	 || ((GET_CODE (sym) == CONST)					\
+	     && SYMBOL_REF_P (XEXP (XEXP (sym, 0),0))			\
+	     && SYMBOL_REF_LOCAL_P (XEXP (XEXP (sym, 0),0))))
+
 /* The load-address macro is used for PC-relative addressing of symbols
    that bind locally.  Don't use it for symbols that should be addressed
    via the GOT.  Also, avoid it for CM_MEDLOW, where LUI addressing
    currently results in more opportunities for linker relaxation.  */
 #define USE_LOAD_ADDRESS_MACRO(sym)					\
   (!TARGET_EXPLICIT_RELOCS &&						\
-   ((flag_pic								\
-     && ((SYMBOL_REF_P (sym) && SYMBOL_REF_LOCAL_P (sym))		\
-	 || ((GET_CODE (sym) == CONST)					\
-	     && SYMBOL_REF_P (XEXP (XEXP (sym, 0),0))			\
-	     && SYMBOL_REF_LOCAL_P (XEXP (XEXP (sym, 0),0)))))		\
-     || riscv_cmodel == CM_MEDANY))
+   ((flag_pic && LOCAL_SYM(sym)) || riscv_cmodel == CM_MEDANY))
 
 /* Define this as 1 if `char' should by default be signed; else as 0.  */
 #define DEFAULT_SIGNED_CHAR 0
-- 
2.32.0


  reply	other threads:[~2022-09-02 23:08 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-30 17:48 [PATCH 0/2] PIC cleanup Vineet Gupta
2022-08-30 17:48 ` [PATCH 1/2] RISC-V: remove deprecate pic code model macro Vineet Gupta
2022-08-31 14:57   ` Palmer Dabbelt
2022-08-31 15:35     ` Kito Cheng
2022-09-02 20:33       ` [PATCH v2] " Vineet Gupta
2022-09-02 21:03         ` Andreas Schwab
2022-09-02 21:05           ` [PATCH v3] " Vineet Gupta
2022-09-23 18:07             ` Vineet Gupta
2022-10-05  2:24               ` Kito Cheng
2022-10-05  3:33                 ` Vineet Gupta
2022-08-31 20:36     ` [PATCH 1/2] " Vineet Gupta
2022-08-30 17:48 ` [PATCH 2/2] RISC-V: remove CM_PIC as it doesn't do much Vineet Gupta
2022-08-31 14:57   ` Palmer Dabbelt
2022-08-31 20:39     ` Vineet Gupta
2022-09-02 20:38       ` Vineet Gupta
2022-09-02 23:08         ` Vineet Gupta [this message]
2022-09-23 16:01           ` [PATCH] RISC-V: make USE_LOAD_ADDRESS_MACRO easier to understand Kito Cheng

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220902230820.381916-1-vineetg@rivosinc.com \
    --to=vineetg@rivosinc.com \
    --cc=christoph.muellner@vrull.eu \
    --cc=collison@rivosinc.com \
    --cc=gcc-patches@gcc.gnu.org \
    --cc=gnu-toolchain@rivosinc.com \
    --cc=jim.wilson.gcc@gmail.com \
    --cc=kito.cheng@gmail.com \
    --cc=palmer@rivosinc.com \
    --cc=philipp.tomsich@vrull.eu \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).