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| author | Richard Sandiford <richard.sandiford@arm.com> | 2019-07-12 07:54:23 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-07-12 07:54:23 +0000 |
| commit | d281492de84960b5885f88fffeeb226650f5141d (patch) | |
| tree | 28304a490e6a430efab5d43f9479dbef727543b4 /gcc/gensupport.c | |
| parent | 1fdd6f0412922eb7438cbbadbb805fce8cc77485 (diff) | |
| download | gcc-d281492de84960b5885f88fffeeb226650f5141d.zip gcc-d281492de84960b5885f88fffeeb226650f5141d.tar.gz gcc-d281492de84960b5885f88fffeeb226650f5141d.tar.bz2 | |
Support multiple operand counts for .md @ patterns
This patch extends the support for "@..." pattern names so that
the patterns can have different numbers of operands. This allows
things like binary and ternary operations to be handled in a
consistent way, a bit like optabs. The generators assert that
the number of operands passed is correct for the underlying
instruction.
Also, replace_operands_with_dups iterated over the old rtx format
even after having decided to do a replacement, which broke with
match_operator.
2019-07-12 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* doc/md.texi: Document that @ patterns can have different
numbers of operands.
* genemit.c (handle_overloaded_gen): Handle this case.
* genopinit.c (handle_overloaded_gen): Likewise.
* gensupport.c (replace_operands_with_dups): Iterate over
the new rtx's format rather than the old one's.
From-SVN: r273432
Diffstat (limited to 'gcc/gensupport.c')
| -rw-r--r-- | gcc/gensupport.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/gensupport.c b/gcc/gensupport.c index 0ad9995..1aab711 100644 --- a/gcc/gensupport.c +++ b/gcc/gensupport.c @@ -500,12 +500,14 @@ replace_operands_with_dups (rtx x) { newx = rtx_alloc (MATCH_DUP); XINT (newx, 0) = XINT (x, 0); + x = newx; } else if (GET_CODE (x) == MATCH_OPERATOR) { newx = rtx_alloc (MATCH_OP_DUP); XINT (newx, 0) = XINT (x, 0); XVEC (newx, 1) = XVEC (x, 2); + x = newx; } else newx = shallow_copy_rtx (x); |