[llvm] [PowerPC] Fix tlbie one-operand InstAlias for ISA 3.0+ (PR #213816)

[Chris Copeland via llvm-commits]

https://github.com/chrisnc updated https://github.com/llvm/llvm-project/pull/213816

>From 906e4a3793fc33ceb2f057ae9f6196db88c265fa Mon Sep 17 00:00:00 2001
From: Chris Copeland <chris at chrisnc.net>
Date: Mon, 3 Aug 2026 18:01:48 -0700
Subject: [PATCH] [PowerPC] Fix tlbie one-operand InstAlias for ISA 3.0+

---
 llvm/lib/Target/PowerPC/PPCInstrInfo.td       |  2 +-
 llvm/test/MC/PowerPC/ppc64-encoding-bookIII.s | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.td b/llvm/lib/Target/PowerPC/PPCInstrInfo.td
index a67da9b85aa94..d09fc965ec6a2 100644
--- a/llvm/lib/Target/PowerPC/PPCInstrInfo.td
+++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.td
@@ -5003,7 +5003,7 @@ def : InstAlias<"mficcr $Rx", (MFSPR gprc:$Rx, 1019)>, Requires<[IsPPC4xx]>;
 
 def : InstAlias<"tlbie $RB", (TLBIE R0, gprc:$RB)>,  Requires<[IsNotISA3_0]>;
 let Predicates = [IsISA3_0] in {
-  def : InstAlias<"tlbie $RB", (TLBIEP9 R0, gprc:$RB, 0, 0, 0)>;
+  def : InstAlias<"tlbie $RB", (TLBIEP9 gprc:$RB, R0, 0, 0, 0)>;
   def : InstAlias<"tlbie $RB, $RS", (TLBIEP9 gprc:$RB, gprc:$RS, 0, 0, 0)>;
 }
 
diff --git a/llvm/test/MC/PowerPC/ppc64-encoding-bookIII.s b/llvm/test/MC/PowerPC/ppc64-encoding-bookIII.s
index e08434058f28a..c87d1de9a6700 100644
--- a/llvm/test/MC/PowerPC/ppc64-encoding-bookIII.s
+++ b/llvm/test/MC/PowerPC/ppc64-encoding-bookIII.s
@@ -170,6 +170,18 @@
 # CHECK-LE: tlbie 4                         # encoding: [0x64,0x22,0x00,0x7c]
             tlbie %r4
 
+# CHECK-BE: tlbie 4                         # encoding: [0x7c,0x00,0x22,0x64]
+# CHECK-LE: tlbie 4                         # encoding: [0x64,0x22,0x00,0x7c]
+            tlbie 4, 0, 0, 0, 0
+
+# CHECK-BE: tlbie 0, 4                      # encoding: [0x7c,0x80,0x02,0x64]
+# CHECK-LE: tlbie 0, 4                      # encoding: [0x64,0x02,0x80,0x7c]
+            tlbie 0, 4, 0, 0, 0
+
+# CHECK-BE: tlbie 4, 5                      # encoding: [0x7c,0xa0,0x22,0x64]
+# CHECK-LE: tlbie 4, 5                      # encoding: [0x64,0x22,0xa0,0x7c]
+            tlbie 4, 5, 0, 0, 0
+
 # CHECK-BE: tlbilx 1, 4, 5                  # encoding: [0x7c,0x24,0x28,0x24]
 # CHECK-LE: tlbilx 1, 4, 5                  # encoding: [0x24,0x28,0x24,0x7c]
             tlbilx 1, %r4, %r5