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[Bug target/49781] [x32] Unnecessary lea in x32 mode
- From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 3 Aug 2011 14:10:44 +0000
- Subject: [Bug target/49781] [x32] Unnecessary lea in x32 mode
- Auto-submitted: auto-generated
- References: <bug-49781-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49781
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> 2011-08-03 14:10:25 UTC ---
(In reply to comment #6)
> 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
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[hjl@gnu-33 ilp32-24]$