2017-02-21 Segher Boessenkool <seg...@kernel.crashing.org>
* config/sh/sh.md (tstsi_t): If operands[0] is a SUBREG instead of
a REG, look at the REG it is a SUBREG of.
(splitter for cmpeqsi_t): Ditto.
---
gcc/config/sh/sh.md | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md
index 2645fca..e19e977 100644
--- a/gcc/config/sh/sh.md
+++ b/gcc/config/sh/sh.md
@@ -561,8 +561,12 @@ (define_insn_and_split "tstsi_t"
gcc_assert (CONST_INT_P (operands[1]));
HOST_WIDE_INT op1val = INTVAL (operands[1]);
+ rtx reg = operands[0];
+ if (SUBREG_P (reg))
+ reg = SUBREG_REG (reg);
+ gcc_assert (REG_P (reg));
bool op0_dead_after_this =
- sh_reg_dead_or_unused_after_insn (curr_insn, REGNO (operands[0]));
+ sh_reg_dead_or_unused_after_insn (curr_insn, REGNO (reg));
if (optimize)
{
@@ -834,7 +838,11 @@ (define_split
/* If the tested reg is not dead after this insn, it's probably used by
something else after the comparison. It's probably better to leave
it as it is. */
- if (find_regno_note (curr_insn, REG_DEAD, REGNO (operands[0])) == NULL_RTX)
+ rtx reg = operands[0];
+ if (SUBREG_P (reg))
+ reg = SUBREG_REG (reg);
+ gcc_assert (REG_P (reg));
+ if (find_regno_note (curr_insn, REG_DEAD, REGNO (reg)) != NULL_RTX)
FAIL;
/* FIXME: Maybe also search the predecessor basic blocks to catch
--
1.9.3
