From: J"orn Rennecke Date: Fri, 12 Apr 2002 10:55:32 +0000 (+0000) Subject: sh.c (broken_move): Constant 0. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=18778292a06fff84ba30d2df3ea070c30b0a8f62;p=gcc.git sh.c (broken_move): Constant 0. * sh.c (broken_move): Constant 0. / 1. load is OK if there is no r0 clobber. From-SVN: r52214 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1957b4375b2..b62485ac028 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Fri Apr 12 10:51:38 2002 J"orn Rennecke + + * sh.c (broken_move): Constant 0. / 1. load is OK if there is + no r0 clobber. + 2002-04-12 Andreas Schwab * config/ia64/ia64.h (EXTRA_SPECS): Fix missing backslash. diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index ff3c08930ea..815d8dcff06 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -2507,9 +2507,16 @@ broken_move (insn) && GET_CODE (SET_SRC (pat)) == CONST_DOUBLE && (fp_zero_operand (SET_SRC (pat)) || fp_one_operand (SET_SRC (pat))) - /* ??? If this is a -m4 or -m4-single compilation, we don't - know the current setting of fpscr, so disable fldi. */ - && (! TARGET_SH4 || TARGET_FMOVD) + /* ??? If this is a -m4 or -m4-single compilation, in general + we don't know the current setting of fpscr, so disable fldi. + There is an exception if this was a register-register move + before reload - and hence it was ascertained that we have + single precision setting - and in a post-reload optimization + we changed this to do a constant load. In that case + we don't have an r0 clobber, hence we must use fldi. */ + && (! TARGET_SH4 || TARGET_FMOVD + || (GET_CODE (XEXP (XVECEXP (PATTERN (insn), 0, 2), 0)) + == SCRATCH)) && GET_CODE (SET_DEST (pat)) == REG && FP_REGISTER_P (REGNO (SET_DEST (pat)))) && (GET_CODE (SET_SRC (pat)) != CONST_INT