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| author | Roger Sayle <roger@eyesopen.com> | 2006-05-08 21:09:49 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2006-05-08 21:09:49 +0000 |
| commit | 857e57535196dbb690cf80afadbfda9756417a4b (patch) | |
| tree | d279562bb2861a814d3e5dfb410f57178f971f5f /gcc/reload.c | |
| parent | 13637c491f74ce8bb97d14d2fd6a7c935800e724 (diff) | |
| download | gcc-857e57535196dbb690cf80afadbfda9756417a4b.zip gcc-857e57535196dbb690cf80afadbfda9756417a4b.tar.gz gcc-857e57535196dbb690cf80afadbfda9756417a4b.tar.bz2 | |
re PR target/27158 (ICE in extract_insn with -maltivec)
PR target/27158
* reload.c (find_reloads_toplev): Only return the simplified SUBREG
of a reg_equiv_constant if the result is a legitimate constant.
* gcc.target/powerpc/pr27158.c: New test case.
From-SVN: r113632
Diffstat (limited to 'gcc/reload.c')
| -rw-r--r-- | gcc/reload.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/gcc/reload.c b/gcc/reload.c index e7798b9..03b5ba6 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -4559,20 +4559,24 @@ find_reloads_toplev (rtx x, int opnum, enum reload_type type, rtx tem; if (subreg_lowpart_p (x) - && regno >= FIRST_PSEUDO_REGISTER && reg_renumber[regno] < 0 + && regno >= FIRST_PSEUDO_REGISTER + && reg_renumber[regno] < 0 && reg_equiv_constant[regno] != 0 && (tem = gen_lowpart_common (GET_MODE (x), - reg_equiv_constant[regno])) != 0) + reg_equiv_constant[regno])) != 0 + && LEGITIMATE_CONSTANT_P (tem)) return tem; - if (regno >= FIRST_PSEUDO_REGISTER && reg_renumber[regno] < 0 + if (regno >= FIRST_PSEUDO_REGISTER + && reg_renumber[regno] < 0 && reg_equiv_constant[regno] != 0) { tem = simplify_gen_subreg (GET_MODE (x), reg_equiv_constant[regno], GET_MODE (SUBREG_REG (x)), SUBREG_BYTE (x)); gcc_assert (tem); - return tem; + if (LEGITIMATE_CONSTANT_P (tem)) + return tem; } /* If the subreg contains a reg that will be converted to a mem, @@ -4588,7 +4592,7 @@ find_reloads_toplev (rtx x, int opnum, enum reload_type type, a wider mode if we have a paradoxical SUBREG. find_reloads will force a reload in that case. So we should not do anything here. */ - else if (regno >= FIRST_PSEUDO_REGISTER + if (regno >= FIRST_PSEUDO_REGISTER #ifdef LOAD_EXTEND_OP && (GET_MODE_SIZE (GET_MODE (x)) <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (x)))) |