From: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Date: Tue, 9 Jan 2024 01:24:53 +0000 (+0800)
Subject: RISC-V: Fix loop invariant check
X-Git-Tag: basepoints/gcc-15~3105
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=db584633e600840619bfb821d8293094ef26a668;p=thirdparty%2Fgcc.git

RISC-V: Fix loop invariant check

As Robin suggested, remove gimple_uid check which is sufficient for our need.

Tested on both RV32/RV64 no regression, ok for trunk ?

gcc/ChangeLog:

	* config/riscv/riscv-vector-costs.cc (loop_invariant_op_p): Fix loop invariant check.
---

diff --git a/gcc/config/riscv/riscv-vector-costs.cc b/gcc/config/riscv/riscv-vector-costs.cc
index 3bae581d6fd0..f4a1a789f237 100644
--- a/gcc/config/riscv/riscv-vector-costs.cc
+++ b/gcc/config/riscv/riscv-vector-costs.cc
@@ -241,7 +241,7 @@ loop_invariant_op_p (class loop *loop,
   if (SSA_NAME_IS_DEFAULT_DEF (op)
       || !flow_bb_inside_loop_p (loop, gimple_bb (SSA_NAME_DEF_STMT (op))))
     return true;
-  return gimple_uid (SSA_NAME_DEF_STMT (op)) & 1;
+  return false;
 }
 
 /* Return true if the variable should be counted into liveness.  */