diff options
Diffstat (limited to 'gcc/config/arm/thumb2.md')
| -rw-r--r-- | gcc/config/arm/thumb2.md | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/gcc/config/arm/thumb2.md b/gcc/config/arm/thumb2.md index e97715ff595..30291b30e21 100644 --- a/gcc/config/arm/thumb2.md +++ b/gcc/config/arm/thumb2.md @@ -1460,13 +1460,14 @@ [(set (pc) (if_then_else (match_operator 0 "equality_operator" - [(zero_extract:SI (match_operand:SI 1 "s_register_operand" "l,?h") - (match_operand:SI 2 "const_int_operand" "i,i") + [(zero_extract:SI (match_operand:SI 1 "s_register_operand" "l,h,h") + (match_operand:SI 2 "const_int_operand" "i,Pu,i") (const_int 0)) (const_int 0)]) (label_ref (match_operand 3 "" "")) (pc))) - (clobber (match_scratch:SI 4 "=l,X"))] + (clobber (match_scratch:SI 4 "=l,X,r")) + (clobber (reg:CC CC_REGNUM))] "TARGET_THUMB2" "* { @@ -1487,11 +1488,22 @@ } else { - rtx op[2]; - op[0] = operands[1]; - op[1] = GEN_INT ((1 << INTVAL (operands[2])) - 1); + rtx op[3]; + + if (which_alternative == 1) + { + op[0] = operands[1]; + op[1] = GEN_INT ((1 << INTVAL (operands[2])) - 1); + output_asm_insn (\"tst\\t%0, %1\", op); + } + else + { + op[0] = operands[4]; + op[1] = operands[1]; + op[2] = GEN_INT (32 - INTVAL (operands[2])); + output_asm_insn (\"lsls\\t%0, %1, %2\", op); + } - output_asm_insn (\"tst\\t%0, %1\", op); switch (get_attr_length (insn)) { case 6: return \"b%d0\\t%l3\"; |