In reworking the ordering of the 128-bit floating point modes (June 18th, 2018
patch), I missed one conversion insn. This meant the compiler would generate a
conversion to using the IF name.
I have tested this on a little endian power8 system with long double set to
IEEE 128-bit and IBM extended, and it fixes tests that convert between the
128-bit binary floating point types. 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 (extendtfif2): Add missing 128-bit
conversion insn.
--
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 261602)
+++ gcc/config/rs6000/rs6000.md (working copy)
@@ -8158,6 +8158,15 @@ (define_expand "extendtfkf2"
DONE;
})
+(define_expand "extendtfif2"
+ [(set (match_operand:IF 0 "gpc_reg_operand")
+ (float_extend:IF (match_operand:TF 1 "gpc_reg_operand")))]
+ "TARGET_FLOAT128_TYPE"
+{
+ rs6000_expand_float128_convert (operands[0], operands[1], false);
+ DONE;
+})
+
(define_expand "trunciftf2"
[(set (match_operand:TF 0 "gpc_reg_operand")
(float_truncate:TF (match_operand:IF 1 "gpc_reg_operand")))]
