On Tue, Mar 20, 2012 at 09:51:07AM +0100, Eric Botcazou wrote:
> > The patch is bootstrapping now on x86_64-pc-linux-gnu.
>
> It very likely breaks bootstrap with RTL checking enabled:
>
> /sil.a/gnatmail/gnatmail-x/build-sil/x86-linux/gnat/obj/./gcc/xgcc
> -B/sil.a/gnatmail/gnatmail-x/build-sil/x86-linux/gnat/obj/./gcc/
> -B/usr/gnat/i686-pc-linux-gnu/bin/ -B/usr/gnat/i686-pc-linux-gnu/lib/
> -isystem /usr/gnat/i686-pc-linux-gnu/include -isystem
> /usr/gnat/i686-pc-linux-gnu/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -W
> -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
> -Wold-style-definition -isystem ./include -fpic -g -DIN_LIBGCC2
> -fbuilding-libgcc -fno-stack-protector -fpic -I. -I. -I../.././gcc
> -I../../../src/libgcc -I../../../src/libgcc/. -I../../../src/libgcc/../gcc
> -I../../../src/libgcc/../include -I../../../src/libgcc/config/libbid
> -DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS -DUSE_TLS -o
> _popcountsi2.o -MT _popcountsi2.o -MD -MP -MF
> _popcountsi2.dep -DL_popcountsi2 -c ../../../src/libgcc/libgcc2.c
> -fvisibility=hidden -DHIDE_EXPORTS
> ../../../src/libgcc/libgcc2.c: In function '__popcountsi2':
> ../../../src/libgcc/libgcc2.c:835:1: internal compiler error: RTL check:
> expected elt 1 type 'i' or 'n', have '0' (rtx mem) in ix86_decompose_address,
> at config/i386/i386.c:11522
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:mailto:rep...@adacore.com> for instructions.
> make[3]: *** [_popcountsi2.o] Error 1
Yeah, my bootstrap just failed the same. Will test:
2012-03-20 Jakub Jelinek <ja...@redhat.com>
* config/i386/i386.c (ix86_decompose_address) <case ZERO_EXTEND>:
If operand isn't UNSPEC, return 0.
--- gcc/config/i386/i386.c.jj 2012-03-20 09:35:06.000000000 +0100
+++ gcc/config/i386/i386.c 2012-03-20 09:56:35.038835835 +0100
@@ -11516,6 +11516,8 @@ ix86_decompose_address (rtx addr, struct
case ZERO_EXTEND:
op = XEXP (op, 0);
+ if (GET_CODE (op) != UNSPEC)
+ return 0;
/* FALLTHRU */
case UNSPEC:
Jakub
