From: Andrew Stubbs <ams@baylibre.com>
Date: Fri, 19 Jun 2026 15:35:04 +0000 (+0000)
Subject: amdgcn: Add vec_set*ti instructions
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f8d0cc3a557cea05745f1cd6247d0b8a1f8a6f7;p=thirdparty%2Fgcc.git

amdgcn: Add vec_set*ti instructions

The TImode vector vec_set instructions were missing, leading to an ICE
compiling testcase gcc.dg/pr78526.c (although it only shows with other patches
not yet committed).

gcc/ChangeLog:

	* config/gcn/gcn-valu.md (*vec_set<mode>): Ad TImode instruction.
---

diff --git a/gcc/config/gcn/gcn-valu.md b/gcc/config/gcn/gcn-valu.md
index 253d13279c0..edd5bf1f1d2 100644
--- a/gcc/config/gcn/gcn-valu.md
+++ b/gcc/config/gcn/gcn-valu.md
@@ -697,8 +697,6 @@
    (set_attr "exec" "none")
    (set_attr "laneselect" "write")])
 
-; FIXME: 64bit operations really should be splitters, but I am not sure how
-; to represent vertical subregs.
 (define_insn "*vec_set<mode>"
   [(set (match_operand:V_2REG 0 "register_operand"		   "= v")
 	(vec_merge:V_2REG
@@ -714,6 +712,21 @@
    (set_attr "exec" "none")
    (set_attr "laneselect" "write")])
 
+(define_insn "*vec_set<mode>"
+  [(set (match_operand:V_4REG 0 "register_operand"		   "= v")
+	(vec_merge:V_4REG
+	  (vec_duplicate:V_4REG
+	    (match_operand:<SCALAR_MODE> 1 "register_operand"	   " Sv"))
+	  (match_operand:V_4REG 3 "gcn_register_or_unspec_operand" " U0")
+	  (ashift (const_int 1)
+		  (match_operand:SI 2 "gcn_alu_operand"		   "SvB"))))]
+  ""
+  "v_writelane_b32 %L0, %L1, %2\;v_writelane_b32 %H0, %H1, %2\;v_writelane_b32 %J0, %J1, %2\;v_writelane_b32 %K0, %K1, %2"
+  [(set_attr "type" "vmult")
+   (set_attr "length" "32")
+   (set_attr "exec" "none")
+   (set_attr "laneselect" "write")])
+
 (define_expand "vec_set<mode>"
   [(set (match_operand:V_MOV 0 "register_operand")
 	(vec_merge:V_MOV