diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/doc/md.texi | 5 |
2 files changed, 10 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3bcd51c..ef2f059 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2005-10-17 Hans-Peter Nilsson <hp@axis.com> + + PR target/23424 + * md.texi (Modifiers) <%>: Clarify that % doesn't work + after register allocation. + 2005-10-17 DJ Delorie <dj@redhat.com> * config/m32c/m32c.c (m32c_pushm_popm): Don't mark epilogue insns diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index 8bbc2d8..36b0273 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -1552,7 +1552,10 @@ instruction is defined: GCC can only handle one commutative pair in an asm; if you use more, the compiler may fail. Note that you need not use the modifier if the two alternatives are strictly identical; this would only waste -time in the reload pass. +time in the reload pass. The modifier is not operational after +register allocation, so the result of @code{define_peephole2} +and @code{define_split}s performed after reload cannot rely on +@samp{%} to make the intended insn match. @cindex @samp{#} in constraint @item # |