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| author | Kazu Hirata <kazu@codesourcery.com> | 2005-11-21 04:41:38 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@gcc.gnu.org> | 2005-11-21 04:41:38 +0000 |
| commit | 1ef6855c51ead346b46e75c361cda328f25a796d (patch) | |
| tree | 85a7bc2ffc379e780e1eb3308a7cd52a68bfc9d1 /gcc/cse.c | |
| parent | 67dc1785a5a3fd0a439df2b45db5b7f69b3a0ffb (diff) | |
| download | gcc-1ef6855c51ead346b46e75c361cda328f25a796d.zip gcc-1ef6855c51ead346b46e75c361cda328f25a796d.tar.gz gcc-1ef6855c51ead346b46e75c361cda328f25a796d.tar.bz2 | |
re PR rtl-optimization/20583 (ICE in output_operand: invalid expression as operand)
gcc/
PR middle-end/20583
* cse.c (cse_insn): Reject invalid forms of CONST earlier.
gcc/testsuite/
PR middle-end/20583
* gcc.c-torture/compile/pr20583.c: New.
From-SVN: r107278
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 27 |
1 files changed, 16 insertions, 11 deletions
@@ -5506,6 +5506,22 @@ cse_insn (rtx insn, rtx libcall_insn) break; } + /* Reject certain invalid forms of CONST that we create. */ + else if (CONSTANT_P (trial) + && GET_CODE (trial) == CONST + /* Reject cases that will cause decode_rtx_const to + die. On the alpha when simplifying a switch, we + get (const (truncate (minus (label_ref) + (label_ref)))). */ + && (GET_CODE (XEXP (trial, 0)) == TRUNCATE + /* Likewise on IA-64, except without the + truncate. */ + || (GET_CODE (XEXP (trial, 0)) == MINUS + && GET_CODE (XEXP (XEXP (trial, 0), 0)) == LABEL_REF + && GET_CODE (XEXP (XEXP (trial, 0), 1)) == LABEL_REF))) + /* Do nothing for this case. */ + ; + /* Look for a substitution that makes a valid insn. */ else if (validate_change (insn, &SET_SRC (sets[i].rtl), trial, 0)) { @@ -5541,17 +5557,6 @@ cse_insn (rtx insn, rtx libcall_insn) else if (constant_pool_entries_cost && CONSTANT_P (trial) - /* Reject cases that will cause decode_rtx_const to - die. On the alpha when simplifying a switch, we - get (const (truncate (minus (label_ref) - (label_ref)))). */ - && ! (GET_CODE (trial) == CONST - && GET_CODE (XEXP (trial, 0)) == TRUNCATE) - /* Likewise on IA-64, except without the truncate. */ - && ! (GET_CODE (trial) == CONST - && GET_CODE (XEXP (trial, 0)) == MINUS - && GET_CODE (XEXP (XEXP (trial, 0), 0)) == LABEL_REF - && GET_CODE (XEXP (XEXP (trial, 0), 1)) == LABEL_REF) && (src_folded == 0 || (!MEM_P (src_folded) && ! src_folded_force_flag)) |