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| author | Jakub Jelinek <jakub@redhat.com> | 2019-02-21 00:02:29 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2019-02-21 00:02:29 +0100 |
| commit | 37d7267f8093e6720b05fec5a8eac26ade0b55ad (patch) | |
| tree | 800b38ba1aeb67ced6a80af833fb949859b4a090 /gcc | |
| parent | cd56fb7957a9b2b685f7dec2db6307bde5a0d4f0 (diff) | |
| download | gcc-37d7267f8093e6720b05fec5a8eac26ade0b55ad.zip gcc-37d7267f8093e6720b05fec5a8eac26ade0b55ad.tar.gz gcc-37d7267f8093e6720b05fec5a8eac26ade0b55ad.tar.bz2 | |
re PR middle-end/89412 (gcc ICE in simplify_subreg, at simplify-rtx.c:6273 on i686-linux-gnu)
PR middle-end/89412
* expr.c (expand_assignment): If result is a MEM, use change_address
instead of simplify_gen_subreg.
* gcc.c-torture/compile/pr89412.c: New test.
From-SVN: r269057
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/expr.c | 10 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr89412.c | 16 |
4 files changed, 34 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index aba3eb8..fe31403 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,4 +1,10 @@ 2019-02-20 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/89412 + * expr.c (expand_assignment): If result is a MEM, use change_address + instead of simplify_gen_subreg. + +2019-02-20 Jakub Jelinek <jakub@redhat.com> David Malcolm <dmalcolm@redhat.com> PR middle-end/89091 @@ -5211,9 +5211,13 @@ expand_assignment (tree to, tree from, bool nontemporal) } else { - rtx from_rtx - = simplify_gen_subreg (to_mode, result, - TYPE_MODE (TREE_TYPE (from)), 0); + rtx from_rtx; + if (MEM_P (result)) + from_rtx = change_address (result, to_mode, NULL_RTX); + else + from_rtx + = simplify_gen_subreg (to_mode, result, + TYPE_MODE (TREE_TYPE (from)), 0); if (from_rtx) { emit_move_insn (XEXP (to_rtx, 0), diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 353e4d7..32a68cc 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,4 +1,9 @@ 2019-02-20 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/89412 + * gcc.c-torture/compile/pr89412.c: New test. + +2019-02-20 Jakub Jelinek <jakub@redhat.com> David Malcolm <dmalcolm@redhat.com> PR middle-end/89091 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr89412.c b/gcc/testsuite/gcc.c-torture/compile/pr89412.c new file mode 100644 index 0000000..0d6ddd5 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr89412.c @@ -0,0 +1,16 @@ +/* PR middle-end/89412 */ + +struct S { double a, b; } d; +int e; +double f; + +void +foo () +{ + _Complex double h; + while (e) + { + f = h; + *(struct S *) &h = d; + } +} |