diff options
Diffstat (limited to 'gcc/dse.c')
| -rw-r--r-- | gcc/dse.c | 29 |
1 files changed, 11 insertions, 18 deletions
diff --git a/gcc/dse.c b/gcc/dse.c index b03616102b5..68d06bb444f 100644 --- a/gcc/dse.c +++ b/gcc/dse.c @@ -2269,6 +2269,7 @@ scan_insn (bb_info_t bb_info, rtx_insn *insn) if (CALL_P (insn)) { bool const_call; + rtx call, sym; tree memset_call = NULL_TREE; insn_info->cannot_delete = true; @@ -2278,24 +2279,16 @@ scan_insn (bb_info_t bb_info, rtx_insn *insn) been pushed onto the stack. memset and bzero don't read memory either. */ const_call = RTL_CONST_CALL_P (insn); - if (!const_call) - { - rtx call = get_call_rtx_from (insn); - if (call && GET_CODE (XEXP (XEXP (call, 0), 0)) == SYMBOL_REF) - { - rtx symbol = XEXP (XEXP (call, 0), 0); - if (SYMBOL_REF_DECL (symbol) - && TREE_CODE (SYMBOL_REF_DECL (symbol)) == FUNCTION_DECL) - { - if ((DECL_BUILT_IN_CLASS (SYMBOL_REF_DECL (symbol)) - == BUILT_IN_NORMAL - && (DECL_FUNCTION_CODE (SYMBOL_REF_DECL (symbol)) - == BUILT_IN_MEMSET)) - || SYMBOL_REF_DECL (symbol) == block_clear_fn) - memset_call = SYMBOL_REF_DECL (symbol); - } - } - } + if (!const_call + && (call = get_call_rtx_from (insn)) + && (sym = XEXP (XEXP (call, 0), 0)) + && GET_CODE (sym) == SYMBOL_REF + && SYMBOL_REF_DECL (sym) + && TREE_CODE (SYMBOL_REF_DECL (sym)) == FUNCTION_DECL + && DECL_BUILT_IN_CLASS (SYMBOL_REF_DECL (sym)) == BUILT_IN_NORMAL + && DECL_FUNCTION_CODE (SYMBOL_REF_DECL (sym)) == BUILT_IN_MEMSET) + memset_call = SYMBOL_REF_DECL (sym); + if (const_call || memset_call) { insn_info_t i_ptr = active_local_stores; |