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| author | Jakub Jelinek <jakub@redhat.com> | 2012-12-20 19:13:56 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-12-20 19:13:56 +0100 |
| commit | d97c9b2248a86fc8a2d3f65df0e0a63347c89e2a (patch) | |
| tree | 59a1a32f0ecc1e856d08b15d3921d000019c27c2 /gcc | |
| parent | 5bb339361a483eca12853be5729b7b1ad12ed3dd (diff) | |
| download | gcc-d97c9b2248a86fc8a2d3f65df0e0a63347c89e2a.zip gcc-d97c9b2248a86fc8a2d3f65df0e0a63347c89e2a.tar.gz gcc-d97c9b2248a86fc8a2d3f65df0e0a63347c89e2a.tar.bz2 | |
re PR middle-end/55750 (-( in expand_expr_addr_expr_1, at expr.c:7646)
PR middle-end/55750
* gimplify.c (gimplify_self_mod_expr): Don't force lvalue to
pass is_gimple_min_lval.
* gcc.c-torture/execute/pr55750.c: New test.
From-SVN: r194647
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/gimplify.c | 16 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/pr55750.c | 29 |
4 files changed, 43 insertions, 13 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1fb596f..9e7a4b7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-12-20 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/55750 + * gimplify.c (gimplify_self_mod_expr): Don't force lvalue to + pass is_gimple_min_lval. + 2012-12-20 Richard Henderson <rth@redhat.com> Andreas Krebbel <Andreas.Krebbel@de.ibm.com> diff --git a/gcc/gimplify.c b/gcc/gimplify.c index f628b8a..e79d063 100644 --- a/gcc/gimplify.c +++ b/gcc/gimplify.c @@ -2391,25 +2391,15 @@ gimplify_self_mod_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p, rhs = TREE_OPERAND (*expr_p, 1); /* For postfix operator, we evaluate the LHS to an rvalue and then use - that as the result value and in the postqueue operation. We also - make sure to make lvalue a minimal lval, see - gcc.c-torture/execute/20040313-1.c for an example where this matters. */ + that as the result value and in the postqueue operation. */ if (postfix) { - if (!is_gimple_min_lval (lvalue)) - { - mark_addressable (lvalue); - lvalue = build_fold_addr_expr_loc (input_location, lvalue); - gimplify_expr (&lvalue, pre_p, post_p, is_gimple_val, fb_rvalue); - lvalue = build_fold_indirect_ref_loc (input_location, lvalue); - } ret = gimplify_expr (&lhs, pre_p, post_p, is_gimple_val, fb_rvalue); if (ret == GS_ERROR) return ret; - } - if (postfix) - lhs = get_initialized_tmp_var (lhs, pre_p, NULL); + lhs = get_initialized_tmp_var (lhs, pre_p, NULL); + } /* For POINTERs increment, use POINTER_PLUS_EXPR. */ if (POINTER_TYPE_P (TREE_TYPE (lhs))) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index c7cb233..b89fa02 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2012-12-20 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/55750 + * gcc.c-torture/execute/pr55750.c: New test. + 2012-12-20 Richard Biener <rguenther@suse.de> PR middle-end/55740 diff --git a/gcc/testsuite/gcc.c-torture/execute/pr55750.c b/gcc/testsuite/gcc.c-torture/execute/pr55750.c new file mode 100644 index 0000000..d2b3c63 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr55750.c @@ -0,0 +1,29 @@ +/* PR middle-end/55750 */ + +extern void abort (void); + +struct S +{ + int m : 1; + int n : 7; +} arr[2]; + +__attribute__((noinline, noclone)) void +foo (unsigned i) +{ + arr[i].n++; +} + +int +main () +{ + arr[0].m = -1; + arr[0].n = (1 << 6) - 1; + arr[1].m = 0; + arr[1].n = -1; + foo (0); + foo (1); + if (arr[0].m != -1 || arr[0].n != -(1 << 6) || arr[1].m != 0 || arr[1].n != 0) + abort (); + return 0; +} |