[llvm] [PowerPC] Implement 32byte indexed paired ld and st instruction (PR #160767)

[Lei Huang via llvm-commits]

https://github.com/lei137 updated https://github.com/llvm/llvm-project/pull/160767

>From 6fd7402bacbdb90d35ef7a8be67da27941aad958 Mon Sep 17 00:00:00 2001
From: Lei Huang <lei at ca.ibm.com>
Date: Thu, 25 Sep 2025 20:04:04 +0000
Subject: [PATCH] [PowerPC] Implement 32byte indexed paired ld and st
 instruction

---
 llvm/lib/Target/PowerPC/PPCInstrFuture.td                 | 8 ++++++++
 .../MC/Disassembler/PowerPC/ppc-encoding-ISAFuture.txt    | 6 ++++++
 .../Disassembler/PowerPC/ppc64le-encoding-ISAFuture.txt   | 6 ++++++
 llvm/test/MC/PowerPC/ppc-encoding-ISAFuture.s             | 8 ++++++++
 4 files changed, 28 insertions(+)

diff --git a/llvm/lib/Target/PowerPC/PPCInstrFuture.td b/llvm/lib/Target/PowerPC/PPCInstrFuture.td
index 1aefea1a1c498..7acbc1e8e4535 100644
--- a/llvm/lib/Target/PowerPC/PPCInstrFuture.td
+++ b/llvm/lib/Target/PowerPC/PPCInstrFuture.td
@@ -310,6 +310,10 @@ let Predicates = [HasVSX, IsISAFuture] in {
     def LXVPRLL : XForm_XTp5_RAB5<31, 621, (outs vsrprc:$XTp),
                                   (ins (memr $RA):$addr, g8rc:$RB),
                                   "lxvprll $XTp, $addr, $RB", IIC_LdStLFD, []>;
+    def LXVPB32X
+        : XForm_XTp5_RAB5<31, 877, (outs vsrprc:$XTp),
+                          (ins (memr $RA):$addr, g8rc:$RB),
+                          "lxvpb32x $XTp, $addr, $RB", IIC_LdStLFD, []>;
   }
 
   let mayStore = 1 in {
@@ -326,6 +330,10 @@ let Predicates = [HasVSX, IsISAFuture] in {
         : XForm_XTp5_RAB5<31, 749, (outs),
                           (ins vsrprc:$XTp, (memr $RA):$addr, g8rc:$RB),
                           "stxvprll $XTp, $addr, $RB", IIC_LdStLFD, []>;
+    def STXVPB32X
+        : XForm_XTp5_RAB5<31, 1005, (outs),
+                          (ins vsrprc:$XTp, (memr $RA):$addr, g8rc:$RB),
+                          "stxvpb32x $XTp, $addr, $RB", IIC_LdStLFD, []>;
   }
 
   def VUPKHSNTOB : VXForm_VRTB5<387, 0, (outs vrrc:$VRT), (ins vrrc:$VRB),
diff --git a/llvm/test/MC/Disassembler/PowerPC/ppc-encoding-ISAFuture.txt b/llvm/test/MC/Disassembler/PowerPC/ppc-encoding-ISAFuture.txt
index cdfc8ce9e0ca5..02e91ec5a73e1 100644
--- a/llvm/test/MC/Disassembler/PowerPC/ppc-encoding-ISAFuture.txt
+++ b/llvm/test/MC/Disassembler/PowerPC/ppc-encoding-ISAFuture.txt
@@ -70,12 +70,18 @@
 #CHECK: lxvprll 6, 2, 1
 0x7c 0xc2 0x0c 0xda
 
+#CHECK: lxvpb32x 2, 15, 16
+0x7c,0x4f,0x86,0xda
+
 #CHECK: stxvprl 0, 1, 2
 0x7c 0x01 0x15 0x9a
 
 #CHECK: stxvprll 6, 0, 1
 0x7c 0xc0 0x0d 0xda
 
+#CHECK: stxvpb32x 2, 15, 16
+0x7c,0x4f,0x87,0xda
+
 #CHECK: dmxvi8gerx4 1, 2, 4
 0xec,0x82,0x20,0x58
 
diff --git a/llvm/test/MC/Disassembler/PowerPC/ppc64le-encoding-ISAFuture.txt b/llvm/test/MC/Disassembler/PowerPC/ppc64le-encoding-ISAFuture.txt
index f7e314fc819e4..d17c7e0e81a6b 100644
--- a/llvm/test/MC/Disassembler/PowerPC/ppc64le-encoding-ISAFuture.txt
+++ b/llvm/test/MC/Disassembler/PowerPC/ppc64le-encoding-ISAFuture.txt
@@ -64,12 +64,18 @@
 #CHECK: lxvprll 6, 2, 1
 0xda 0x0c 0xc2 0x7c
 
+#CHECK: lxvpb32x 2, 15, 16
+0xda,0x86,0x4f,0x7c
+
 #CHECK: stxvprl 0, 1, 2
 0x9a 0x15 0x01 0x7c
 
 #CHECK: stxvprll 6, 0, 1
 0xda 0x0d 0xc0 0x7c
 
+#CHECK: stxvpb32x 2, 15, 16
+0xda,0x87,0x4f,0x7c
+
 #CHECK: dmxvi8gerx4 1, 2, 4
 0x58,0x20,0x82,0xec
 
diff --git a/llvm/test/MC/PowerPC/ppc-encoding-ISAFuture.s b/llvm/test/MC/PowerPC/ppc-encoding-ISAFuture.s
index 29fedd7c20646..f453dd8c50cac 100644
--- a/llvm/test/MC/PowerPC/ppc-encoding-ISAFuture.s
+++ b/llvm/test/MC/PowerPC/ppc-encoding-ISAFuture.s
@@ -89,6 +89,10 @@
 # CHECK-LE: lxvprll 6, 2, 1               # encoding: [0xda,0x0c,0xc2,0x7c]
             lxvprll 6, 2, 1
 
+           lxvpb32x 2, 15, 16
+#CHECK-BE: lxvpb32x 2, 15, 16            # encoding: [0x7c,0x4f,0x86,0xda]
+#CHECK-LE: lxvpb32x 2, 15, 16            # encoding: [0xda,0x86,0x4f,0x7c]
+
 # CHECK-BE: stxvprl 0, 1, 2               # encoding: [0x7c,0x01,0x15,0x9a]
 # CHECK-LE: stxvprl 0, 1, 2               # encoding: [0x9a,0x15,0x01,0x7c]
             stxvprl 0, 1, 2
@@ -97,6 +101,10 @@
 # CHECK-LE: stxvprll 6, 0, 1              # encoding: [0xda,0x0d,0xc0,0x7c]
             stxvprll 6, 0, 1
 
+           stxvpb32x 2, 15, 16
+#CHECK-BE: stxvpb32x 2, 15, 16            # encoding: [0x7c,0x4f,0x87,0xda]
+#CHECK-LE: stxvpb32x 2, 15, 16            # encoding: [0xda,0x87,0x4f,0x7c]
+
             dmxvi8gerx4 1, 2, 4
 # CHECK-BE: dmxvi8gerx4 1, 2, 4                     # encoding: [0xec,0x82,0x20,0x58]
 # CHECK-LE: dmxvi8gerx4 1, 2, 4                     # encoding: [0x58,0x20,0x82,0xec]