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| author | Jakub Jelinek <jakub@redhat.com> | 2010-09-20 22:41:08 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-09-20 22:41:08 +0200 |
| commit | 220c5f0c7f75f556a37f0b8ae25c1f5a3a69240f (patch) | |
| tree | fd6859a437a2904175c94cfdd0e4b0b0a34c9f46 | |
| parent | 0a7a6af67e6311a427052ef6fc21f6df72be7b51 (diff) | |
| download | gcc-220c5f0c7f75f556a37f0b8ae25c1f5a3a69240f.zip gcc-220c5f0c7f75f556a37f0b8ae25c1f5a3a69240f.tar.gz gcc-220c5f0c7f75f556a37f0b8ae25c1f5a3a69240f.tar.bz2 | |
re PR rtl-optimization/45728 (ICE: in gen_lowpart_general, at rtlhooks.c:59 at -O1 when comparing union members)
PR rtl-optimization/45728
* expr.c (expand_expr_real_1): If op0 isn't REG or MEM, try
gen_lowpart_common first and if that fails, force_reg first
before calling gen_lowpart.
* gcc.c-torture/compile/pr45728.c: New test.
From-SVN: r164456
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/expr.c | 10 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr45728.c | 17 |
4 files changed, 36 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5538b50..cad3a43 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2010-09-20 Jakub Jelinek <jakub@redhat.com> + PR rtl-optimization/45728 + * expr.c (expand_expr_real_1): If op0 isn't REG or MEM, try + gen_lowpart_common first and if that fails, force_reg first + before calling gen_lowpart. + PR middle-end/45678 * cfgexpand.c (expand_one_stack_var_at): Use crtl->max_used_stack_slot_alignment as max_align, instead @@ -9381,7 +9381,15 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode, { if (GET_CODE (op0) == SUBREG) op0 = force_reg (GET_MODE (op0), op0); - op0 = gen_lowpart (mode, op0); + temp = gen_lowpart_common (mode, op0); + if (temp) + op0 = temp; + else + { + if (!REG_P (op0) && !MEM_P (op0)) + op0 = force_reg (GET_MODE (op0), op0); + op0 = gen_lowpart (mode, op0); + } } /* If both types are integral, convert from one mode to the other. */ else if (INTEGRAL_TYPE_P (type) && INTEGRAL_TYPE_P (TREE_TYPE (treeop0))) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 3d4bcf9..13d783d 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2010-09-20 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/45728 + * gcc.c-torture/compile/pr45728.c: New test. + 2010-09-20 Paul Thomas <pault@gcc.gnu.org> PR fortran/45081 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr45728.c b/gcc/testsuite/gcc.c-torture/compile/pr45728.c new file mode 100644 index 0000000..a6ee10b --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr45728.c @@ -0,0 +1,17 @@ +/* PR rtl-optimization/45728 */ + +union U +{ + int *m; + double d; +}; + +int i; +union U u; + +int +foo (void) +{ + union U v = { &i }; + return u.d == v.d; +} |