From 66de57c9812ea54637edc76dc2891b112d63fe64 Mon Sep 17 00:00:00 2001 From: David Holsgrove Date: Thu, 23 May 2013 10:51:32 +1000 Subject: [PATCH] [Patch, microblaze]: Fix bswaphi2 implementation MicroBlaze insn swaph swaps the contents of register rA as two halfwords placing result in rD; (rD)[0:15] <- (rA)[16:31] (rD)[16:31] <- (rA)[0:15] gcc bswaphi2 is intended to reverse the order of the bytes in the half integer in rA (rD)[8:15] <- (rA)[0:7] (rD)[7:0] <- (rA)[8:15] (rD)[24:31] <- (rA)[16:23] (rD)[16:23] <- (rA)[24:31] Correct microblaze bswaphi2 insn pattern to be a swapb followed by swaph Reported-by: Nathan Rossi Signed-off-by: David Holsgrove --- gcc/config/microblaze/microblaze.md | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/gcc/config/microblaze/microblaze.md b/gcc/config/microblaze/microblaze.md index 4e7fe3b..1633359 100644 --- a/gcc/config/microblaze/microblaze.md +++ b/gcc/config/microblaze/microblaze.md @@ -365,7 +365,8 @@ [(set (match_operand:HI 0 "register_operand" "=r") (bswap:HI (match_operand:HI 1 "register_operand" "r")))] "TARGET_REORDER" - "swaph %0, %1" + "swapb %0, %1 + swaph %0, %0" ) ;;---------------------------------------------------------------- -- 1.7.9.5