amdgcn: refactor mode iterators

The iterative addition of 8 and 16 bit vectors has left the mode iterators in a
bit of a mess.  Also, the original names were rather verbose leading to
formatting difficulties.

This patch renames all the vector modes such that they are shorter and tidier.
It does not change the output machine description at all.

2020-03-27  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/gcn/gcn-valu.md:
	(VEC_SUBDWORD_MODE): Rename to V_QIHI throughout.
	(VEC_1REG_MODE): Delete.
	(VEC_1REG_ALT): Delete.
	(VEC_ALL1REG_MODE): Rename to V_1REG throughout.
	(VEC_1REG_INT_MODE): Delete.
	(VEC_ALL1REG_INT_MODE): Rename to V_INT_1REG throughout.
	(VEC_ALL1REG_INT_ALT): Rename to V_INT_1REG_ALT throughout.
	(VEC_2REG_MODE): Rename to V_2REG throughout.
	(VEC_REG_MODE): Rename to V_noHI throughout.
	(VEC_ALLREG_MODE): Rename to V_ALL throughout.
	(VEC_ALLREG_ALT):  Rename to V_ALL_ALT throughout.
	(VEC_ALLREG_INT_MODE): Rename to V_INT throughout.
	(VEC_INT_MODE): Delete.
	(VEC_FP_MODE): Rename to V_FP throughout and move to top.
	(VEC_FP_1REG_MODE): Rename to V_FP_1REG throughout and move to top.
	(FP_MODE): Delete and replace with FP throughout.
	(FP_1REG_MODE): Delete and replace with FP_1REG throughout.
	(VCMP_MODE): Rename to V_noQI throughout and move to top.
	(VCMP_MODE_INT): Rename to V_INT_noQI throughout and move to top.
	* config/gcn/gcn.md (FP): New mode iterator.
	(FP_1REG): New mode iterator.

gcc/ChangeLog

+2020-03-27  Andrew Stubbs  <ams@codesourcery.com>
+
+	* config/gcn/gcn-valu.md:
+	(VEC_SUBDWORD_MODE): Rename to V_QIHI throughout.
+	(VEC_1REG_MODE): Delete.
+	(VEC_1REG_ALT): Delete.
+	(VEC_ALL1REG_MODE): Rename to V_1REG throughout.
+	(VEC_1REG_INT_MODE): Delete.
+	(VEC_ALL1REG_INT_MODE): Rename to V_INT_1REG throughout.
+	(VEC_ALL1REG_INT_ALT): Rename to V_INT_1REG_ALT throughout.
+	(VEC_2REG_MODE): Rename to V_2REG throughout.
+	(VEC_REG_MODE): Rename to V_noHI throughout.
+	(VEC_ALLREG_MODE): Rename to V_ALL throughout.
+	(VEC_ALLREG_ALT):  Rename to V_ALL_ALT throughout.
+	(VEC_ALLREG_INT_MODE): Rename to V_INT throughout.
+	(VEC_INT_MODE): Delete.
+	(VEC_FP_MODE): Rename to V_FP throughout and move to top.
+	(VEC_FP_1REG_MODE): Rename to V_FP_1REG throughout and move to top.
+	(FP_MODE): Delete and replace with FP throughout.
+	(FP_1REG_MODE): Delete and replace with FP_1REG throughout.
+	(VCMP_MODE): Rename to V_noQI throughout and move to top.
+	(VCMP_MODE_INT): Rename to V_INT_noQI throughout and move to top.
+	* config/gcn/gcn.md (FP): New mode iterator.
+	(FP_1REG): New mode iterator.
+
 2020-03-27  David Malcolm  <dmalcolm@redhat.com>
 
 	* doc/invoke.texi (-fdump-analyzer-supergraph): Document that this

gcc/config/gcn/gcn.md

@@ -299,6 +299,8 @@
 (define_mode_iterator SISF [SI SF])
 (define_mode_iterator QIHI [QI HI])
 (define_mode_iterator DIDF [DI DF])
+(define_mode_iterator FP [HF SF DF])
+(define_mode_iterator FP_1REG [HF SF])
 
 ;; }}}
 ;; {{{ Attributes.