Hi!
I'm getting
+FAIL: gcc.target/i386/3dnow-1.c (internal compiler error: Segmentation fault
signal terminated program cc1)
+FAIL: gcc.target/i386/3dnow-1.c (test for excess errors)
+FAIL: gcc.target/i386/3dnow-2.c (internal compiler error: Segmentation fault
signal terminated program cc1)
+FAIL: gcc.target/i386/3dnow-2.c (test for excess errors)
+FAIL: gcc.target/i386/mmx-1.c (internal compiler error: Segmentation fault
signal terminated program cc1)
+FAIL: gcc.target/i386/mmx-1.c (test for excess errors)
+FAIL: gcc.target/i386/mmx-2.c (internal compiler error: Segmentation fault
signal terminated program cc1)
+FAIL: gcc.target/i386/mmx-2.c (test for excess errors)
regressions on i686-linux since r14-1166. The problem is when
ix86_expand_vector_init_general is called with mmx_ok = true and
mode = V4HImode, it newly recurses with mmx_ok = false and mode = V2SImode,
but as mmx_ok is false and !TARGET_SSE, we recurse again with the same
arguments (ok, fresh new tmp and vals) infinitely.
The following patch fixes that by passing mmx_ok to that recursive call.
For n_words == 4 it isn't needed, because we only care about mmx_ok for
V2SImode or V2SFmode and no other modes.
Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
2023-06-07 Jakub Jelinek <ja...@redhat.com>
PR target/110152
* config/i386/i386-expand.cc (ix86_expand_vector_init_general): For
n_words == 2 recurse with mmx_ok as first argument rather than false.
--- gcc/config/i386/i386-expand.cc.jj 2023-06-03 15:32:04.489410367 +0200
+++ gcc/config/i386/i386-expand.cc 2023-06-07 10:31:34.715981752 +0200
@@ -16371,7 +16371,7 @@ quarter:
machine_mode concat_mode = tmp_mode == DImode ? V2DImode : V2SImode;
rtx tmp = gen_reg_rtx (concat_mode);
vals = gen_rtx_PARALLEL (concat_mode, gen_rtvec_v (2, words));
- ix86_expand_vector_init_general (false, concat_mode, tmp, vals);
+ ix86_expand_vector_init_general (mmx_ok, concat_mode, tmp, vals);
emit_move_insn (target, gen_lowpart (mode, tmp));
}
else if (n_words == 4)
Jakub
