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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
This commit is contained in:
J"orn Rennecke 2002-04-12 10:55:32 +00:00 committed by Joern Rennecke
parent 4782bd5bee
commit 18778292a0
2 changed files with 15 additions and 3 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Fri Apr 12 10:51:38 2002 J"orn Rennecke <joern.rennecke@superh.com>
* sh.c (broken_move): Constant 0. / 1. load is OK if there is
no r0 clobber.
2002-04-12 Andreas Schwab <schwab@suse.de>
* config/ia64/ia64.h (EXTRA_SPECS): Fix missing backslash.

13
gcc/config/sh/sh.c
View File

@ -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