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| author | Jakub Jelinek <jakub@redhat.com> | 2018-04-17 11:16:48 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-04-17 11:16:48 +0200 |
| commit | 50ffe7adc0d686e9f193c4e53ea2f0d617309f35 (patch) | |
| tree | 3afce06c88ff6ba31c34a8e72d514a9a1d9bb56a /gcc | |
| parent | 5bf31c642ec176701629edc19504b79be3c12ee5 (diff) | |
| download | gcc-50ffe7adc0d686e9f193c4e53ea2f0d617309f35.zip gcc-50ffe7adc0d686e9f193c4e53ea2f0d617309f35.tar.gz gcc-50ffe7adc0d686e9f193c4e53ea2f0d617309f35.tar.bz2 | |
re PR middle-end/85414 (ICE: in ix86_expand_prologue, at config/i386/i386.c:13810 with -Og -fgcse)
PR middle-end/85414
* rtlhooks.c (gen_lowpart_if_possible): Don't call gen_lowpart_SUBREG
on a SUBREG.
* gcc.dg/pr85414.c: New test.
From-SVN: r259433
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/rtlhooks.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr85414.c | 10 |
4 files changed, 23 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 21966a3..e444bf1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2018-04-17 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/85414 + * rtlhooks.c (gen_lowpart_if_possible): Don't call gen_lowpart_SUBREG + on a SUBREG. + 2018-04-17 Martin Jambor <mjambor@suse.cz> PR ipa/85421 diff --git a/gcc/rtlhooks.c b/gcc/rtlhooks.c index ecdebbb..5914550 100644 --- a/gcc/rtlhooks.c +++ b/gcc/rtlhooks.c @@ -123,9 +123,9 @@ gen_lowpart_if_possible (machine_mode mode, rtx x) return new_rtx; } - else if (mode != GET_MODE (x) && GET_MODE (x) != VOIDmode + else if (mode != GET_MODE (x) && GET_MODE (x) != VOIDmode && !SUBREG_P (x) && validate_subreg (mode, GET_MODE (x), x, - subreg_lowpart_offset (mode, GET_MODE (x)))) + subreg_lowpart_offset (mode, GET_MODE (x)))) return gen_lowpart_SUBREG (mode, x); else return 0; diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 9e44409..95bdc03 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-04-17 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/85414 + * gcc.dg/pr85414.c: New test. + 2018-04-17 Martin Jambor <mjambor@suse.cz> PR ipa/85421 diff --git a/gcc/testsuite/gcc.dg/pr85414.c b/gcc/testsuite/gcc.dg/pr85414.c new file mode 100644 index 0000000..d061324 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr85414.c @@ -0,0 +1,10 @@ +/* PR middle-end/85414 */ +/* { dg-do compile { target int128 } } */ +/* { dg-options "-Og -fgcse -Wno-uninitialized" } */ + +int +foo (void) +{ + unsigned __int128 c; + return __builtin_mul_overflow_p (59, -c, (short) 0); +} |