[Bug target/49781] [x32] Unnecessary lea in x32 mode

["ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49781

--- Comment #9 from Uros Bizjak <ubizjak at gmail dot com> 2011-08-03 14:45:40 UTC ---
(In reply to comment #8)

> > Created attachment 24899 [details]
> > Proposed patch that exploits addr32.
> > 
> > H.J., can you please test this patch on mx32.
> > 
> > The patch bootstraps and regression tests OK on x86_64-pc-linux-gnu {,-m32}.
> 
> It failed the testcase for PR 47744, which I just checked in:
> 
> [hjl@gnu-33 ilp32-24]$
> /export/build/gnu/gcc-x32-test/build-x86_64-linux/gcc/xgcc
> -B/export/build/gnu/gcc-x32-test/build-x86_64-linux/gcc/ -S -o x.s -mx32 -O3
> -std=gnu99
> /export/gnu/import/git/gcc-x32/gcc/testsuite/gcc.dg/torture/pr47744-2.c
> /export/gnu/import/git/gcc-x32/gcc/testsuite/gcc.dg/torture/pr47744-2.c: In
> function \u2018matmul_i16\u2019:
> /export/gnu/import/git/gcc-x32/gcc/testsuite/gcc.dg/torture/pr47744-2.c:40:1:
> error: insn does not satisfy its constraints:
> (insn 146 66 67 4 (set (reg:TI 0 ax)
>         (mem:TI (zero_extend:DI (plus:SI (reg:SI 4 si [orig:119 ivtmp.30 ]
> [119])
>                     (reg:SI 5 di [orig:102 dest_y ] [102]))) [6 MEM[base:
> dest_y_18, index: ivtmp.30_63, offset: 0B]+0 S16 A128]))
> /export/gnu/import/git/gcc-x32/gcc/testsuite/gcc.dg/torture/pr47744-2.c:34 60
> {*movti_internal_rex64}
>      (nil))
> /export/gnu/import/git/gcc-x32/gcc/testsuite/gcc.dg/torture/pr47744-2.c:40:1:
> internal compiler error: in reload_cse_simplify_operands, at postreload.c:403
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://gcc.gnu.org/bugs.html> for instructions.
> [hjl@gnu-33 ilp32-24]$

Hm, offsetable operand ...