diff options
Diffstat (limited to 'gcc/gcse.c')
| -rw-r--r-- | gcc/gcse.c | 19 |
1 files changed, 10 insertions, 9 deletions
@@ -810,7 +810,7 @@ want_to_gcse_p (rtx x, machine_mode mode, int *max_distance_ptr) *max_distance_ptr = max_distance; } - return can_assign_to_reg_without_clobbers_p (x); + return can_assign_to_reg_without_clobbers_p (x, mode); } } @@ -818,9 +818,9 @@ want_to_gcse_p (rtx x, machine_mode mode, int *max_distance_ptr) static GTY(()) rtx_insn *test_insn; -/* Return true if we can assign X to a pseudo register such that the - resulting insn does not result in clobbering a hard register as a - side-effect. +/* Return true if we can assign X to a pseudo register of mode MODE + such that the resulting insn does not result in clobbering a hard + register as a side-effect. Additionally, if the target requires it, check that the resulting insn can be copied. If it cannot, this means that X is special and probably @@ -831,14 +831,14 @@ static GTY(()) rtx_insn *test_insn; maybe live hard regs. */ bool -can_assign_to_reg_without_clobbers_p (rtx x) +can_assign_to_reg_without_clobbers_p (rtx x, machine_mode mode) { int num_clobbers = 0; int icode; bool can_assign = false; /* If this is a valid operand, we are OK. If it's VOIDmode, we aren't. */ - if (general_operand (x, GET_MODE (x))) + if (general_operand (x, mode)) return 1; else if (GET_MODE (x) == VOIDmode) return 0; @@ -857,7 +857,7 @@ can_assign_to_reg_without_clobbers_p (rtx x) /* Now make an insn like the one we would make when GCSE'ing and see if valid. */ - PUT_MODE (SET_DEST (PATTERN (test_insn)), GET_MODE (x)); + PUT_MODE (SET_DEST (PATTERN (test_insn)), mode); SET_SRC (PATTERN (test_insn)) = x; icode = recog (PATTERN (test_insn), test_insn, &num_clobbers); @@ -3830,12 +3830,13 @@ compute_ld_motion_mems (void) if (MEM_P (dest) && simple_mem (dest)) { ptr = ldst_entry (dest); - + machine_mode src_mode = GET_MODE (src); if (! MEM_P (src) && GET_CODE (src) != ASM_OPERANDS /* Check for REG manually since want_to_gcse_p returns 0 for all REGs. */ - && can_assign_to_reg_without_clobbers_p (src)) + && can_assign_to_reg_without_clobbers_p (src, + src_mode)) ptr->stores = alloc_INSN_LIST (insn, ptr->stores); else ptr->invalid = 1; |