diff options
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 1bbaa4a2b02..f152afa4019 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -17206,7 +17206,7 @@ thumb1_reorg (void) FOR_EACH_BB_FN (bb, cfun) { rtx dest, src; - rtx pat, op0, set = NULL; + rtx cmp, op0, op1, set = NULL; rtx_insn *prev, *insn = BB_END (bb); bool insn_clobbered = false; @@ -17219,8 +17219,13 @@ thumb1_reorg (void) continue; /* Get the register with which we are comparing. */ - pat = PATTERN (insn); - op0 = XEXP (XEXP (SET_SRC (pat), 0), 0); + cmp = XEXP (SET_SRC (PATTERN (insn)), 0); + op0 = XEXP (cmp, 0); + op1 = XEXP (cmp, 1); + + /* Check that comparison is against ZERO. */ + if (!CONST_INT_P (op1) || INTVAL (op1) != 0) + continue; /* Find the first flag setting insn before INSN in basic block BB. */ gcc_assert (insn != BB_HEAD (bb)); @@ -17260,7 +17265,7 @@ thumb1_reorg (void) PATTERN (prev) = gen_rtx_SET (dest, src); INSN_CODE (prev) = -1; /* Set test register in INSN to dest. */ - XEXP (XEXP (SET_SRC (pat), 0), 0) = copy_rtx (dest); + XEXP (cmp, 0) = copy_rtx (dest); INSN_CODE (insn) = -1; } } |