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riscv-gcc-1
Commit 44ccea40 by J"orn Rennecke Committed by Joern Rennecke
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* sh.md (mulsi3): End mul.l sequence with a no-op move. 

From-SVN: r25699
parent 4f3ae93c
Showing with 8 additions and 1 deletions
gcc/ChangeLog
Thu Mar 11 17:28:32 1999 J"orn Rennecke <amylaar@cygnus.co.uk>
* sh.md (mulsi3): End mul.l sequence with a no-op move.
Thu Mar 11 08:52:02 1999 Bruce Korb <korb@datadesign.com>
* Makefile.in: activated fixinc/mkfixinc.sh
* configure.in: activated fixinc/mkfixinc.sh
......
gcc/config/sh/sh.md
......@@ -1113,7 +1113,10 @@
{
rtx macl = gen_rtx_REG (SImode, MACL_REG);
first = emit_insn (gen_mul_l (operands[1], operands[2]));
last = emit_insn (gen_movsi_i ((operands[0]), macl));
emit_insn (gen_movsi_i ((operands[0]), macl));
/* The sequence must end in a no-op move, lest cse puts macl in its
tables and does invalid substitutions. */
last = emit_insn (gen_movsi_i ((operands[0]), operands[0]));
}
/* Wrap the sequence in REG_LIBCALL / REG_RETVAL notes so that loop
invariant code motion can move it. */
......
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