This patch fixes a thinko that I had that prevented negation of __ibm128 values
if long double is IEEE 128-bit binary floating point.
I have checked this on a little endian power8 system with builds where the long
double is set to IEEE and IBM 128-bit binary floating point, and it fixes some
tests in the testsuite when long double is IEEE. Can I install this on the
trunk and back port it to GCC 8.x?
[gcc]
2018-06-20 Michael Meissner <meiss...@linux.ibm.com>
* config/rs6000/rs6000.md (neg<mode>2_internal): Use the correct
mode to check whether the mode is IBM extended.
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.ibm.com, phone: +1 (978) 899-4797
Index: gcc/config/rs6000/rs6000.md
===================================================================
--- gcc/config/rs6000/rs6000.md (revision 261559)
+++ gcc/config/rs6000/rs6000.md (working copy)
@@ -7933,7 +7933,7 @@ (define_expand "neg<mode>2"
(define_insn "neg<mode>2_internal"
[(set (match_operand:IBM128 0 "gpc_reg_operand" "=d")
(neg:IBM128 (match_operand:IBM128 1 "gpc_reg_operand" "d")))]
- "TARGET_HARD_FLOAT && FLOAT128_IBM_P (TFmode)"
+ "TARGET_HARD_FLOAT && FLOAT128_IBM_P (<MODE>mode)"
{
if (REGNO (operands[0]) == REGNO (operands[1]) + 1)
return "fneg %L0,%L1\;fneg %0,%1";
