From: Marcus Comstedt <marcus@mc.pp.se>
Date: Fri, 19 Mar 2021 19:49:09 +0000 (+0100)
Subject: RISC-V: Fix riscv_subword() for big endian
X-Git-Tag: basepoints/gcc-12~474
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fffefe3d9d1715f83c82331f2265e040f42d09fe;p=thirdparty%2Fgcc.git

RISC-V: Fix riscv_subword() for big endian

gcc/
	* config/riscv/riscv.c (riscv_subword): Take endianness into
	account when calculating the byte offset.
---

diff --git a/gcc/config/riscv/riscv.c b/gcc/config/riscv/riscv.c
index fe48db7a2798..17cdf705c328 100644
--- a/gcc/config/riscv/riscv.c
+++ b/gcc/config/riscv/riscv.c
@@ -1966,7 +1966,7 @@ riscv_address_cost (rtx addr, machine_mode mode,
 rtx
 riscv_subword (rtx op, bool high_p)
 {
-  unsigned int byte = high_p ? UNITS_PER_WORD : 0;
+  unsigned int byte = (high_p != BYTES_BIG_ENDIAN) ? UNITS_PER_WORD : 0;
   machine_mode mode = GET_MODE (op);
 
   if (mode == VOIDmode)