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riscv-gcc-1
Commit 3abe6f90 by Richard Kenner
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(emit_reload_insns): Don't use gen_lowpart_common to get reload 

register into proper mode.

From-SVN: r4855
parent 26f1a00e
Showing with 6 additions and 3 deletions
gcc/reload1.c
......@@ -5516,10 +5516,13 @@ emit_reload_insns (insn)
oldequiv_reg = SUBREG_REG (oldequiv);
/* Encapsulate both RELOADREG and OLDEQUIV into that mode,
then load RELOADREG from OLDEQUIV. */
then load RELOADREG from OLDEQUIV. Note that we cannot use
gen_lowpart_common since it can do the wrong thing when
RELOADREG has a multi-word mode. Note that RELOADREG
must always be a REG here. */
if (GET_MODE (reloadreg) != mode)
reloadreg = gen_lowpart_common (mode, reloadreg);
reloadreg = gen_rtx (REG, mode, REGNO (reloadreg));
while (GET_CODE (oldequiv) == SUBREG && GET_MODE (oldequiv) != mode)
oldequiv = SUBREG_REG (oldequiv);
if (GET_MODE (oldequiv) != VOIDmode
......@@ -5981,7 +5984,7 @@ emit_reload_insns (insn)
}
if (GET_MODE (reloadreg) != mode)
reloadreg = gen_lowpart_common (mode, reloadreg);
reloadreg = gen_rtx (REG, mode, REGNO (reloadreg));
#ifdef SECONDARY_OUTPUT_RELOAD_CLASS
......
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