[llvm] [SPARC][IAS] Add `setuw` alias for `set` (PR #125149)

[via llvm-commits]

https://github.com/koachan created https://github.com/llvm/llvm-project/pull/125149

None

>From 6b51393d638211fe66be14cb0a640f4b6ff59d0c Mon Sep 17 00:00:00 2001
From: Koakuma <koachan at protonmail.com>
Date: Fri, 31 Jan 2025 09:05:24 +0700
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
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Created using spr 1.3.4
---
 llvm/lib/Target/Sparc/SparcInstrAliases.td        | 2 ++
 llvm/test/MC/Sparc/sparc-synthetic-instructions.s | 7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/llvm/lib/Target/Sparc/SparcInstrAliases.td b/llvm/lib/Target/Sparc/SparcInstrAliases.td
index 673a2db59b0929..cfc0b4735c91c4 100644
--- a/llvm/lib/Target/Sparc/SparcInstrAliases.td
+++ b/llvm/lib/Target/Sparc/SparcInstrAliases.td
@@ -605,6 +605,8 @@ def : InstAlias<"unimp", (UNIMP 0), 0>;
 // interchangeable with `unimp` all the time.
 def : MnemonicAlias<"illtrap", "unimp">;
 
+def : MnemonicAlias<"setuw", "set">;
+
 def : MnemonicAlias<"iflush", "flush">;
 
 def : MnemonicAlias<"stub", "stb">;
diff --git a/llvm/test/MC/Sparc/sparc-synthetic-instructions.s b/llvm/test/MC/Sparc/sparc-synthetic-instructions.s
index 5652f868419504..9c6db2836af176 100644
--- a/llvm/test/MC/Sparc/sparc-synthetic-instructions.s
+++ b/llvm/test/MC/Sparc/sparc-synthetic-instructions.s
@@ -54,6 +54,13 @@
         ! CHECK:                                 !   fixup A - offset: 0, value: %lo(2147483647), kind: fixup_sparc_lo10
         set 2147483647, %o1
 
+        !! setuw is a mnemonic alias for set.
+        ! CHECK: sethi %hi(32768), %g1            ! encoding: [0x03,0b00AAAAAA,A,A]
+        ! CHECK:                                  !   fixup A - offset: 0, value: %hi(32768), kind: fixup_sparc_hi22
+        setuw 32768, %g1
+        ! CHECK: mov 1, %g1 ! encoding: [0x82,0x10,0x20,0x01]
+        setuw 1, %g1
+
         ! CHECK: xnor %g1, %g0, %g2               ! encoding: [0x84,0x38,0x40,0x00]
         not %g1, %g2
         ! CHECK: xnor %g1, %g0, %g1               ! encoding: [0x82,0x38,0x40,0x00]