convert_move does not know how to zero-extend a constant integer to the
target mode -- simply because it does not know the source mode. As a
result, 32-bit SImode with the high bit set would be effectively sign-
extended instead of zero-extended.
This patch fixes it.
PR target/68865
PR target/68879
* config/rs6000/rs6000.md (cstore_si_as_di): Force all operands
into registers.
From-SVN: r231621
+2015-12-14 Segher Boessenkool <segher@kernel.crashing.org>
+
+ PR target/68865
+ PR target/68879
+ * config/rs6000/rs6000.md (cstore_si_as_di): Force all operands
+ into registers.
+
2015-12-14 Richard Biener <rguenther@suse.de>
Revert accidentially applied
int uns_flag = unsigned_comparison_operator (operands[1], VOIDmode) ? 1 : 0;
enum rtx_code cond_code = signed_condition (GET_CODE (operands[1]));
+ operands[2] = force_reg (SImode, operands[2]);
+ operands[3] = force_reg (SImode, operands[3]);
rtx op1 = gen_reg_rtx (DImode);
rtx op2 = gen_reg_rtx (DImode);
convert_move (op1, operands[2], uns_flag);