Index: llvm/lib/Target/PowerPC/PPCInstrPrefix.td
===================================================================
--- llvm/lib/Target/PowerPC/PPCInstrPrefix.td
+++ llvm/lib/Target/PowerPC/PPCInstrPrefix.td
@@ -2554,16 +2554,21 @@
             (COPY_TO_REGCLASS (XVCVBF16SPN RCCp.AToVSRC), VRRC)>;
 }
 
-let AddedComplexity = 400, Predicates = [IsISA3_1] in {
-  def : Pat<(truncstorei8 (i32 (vector_extract v16i8:$rS, 0)), xoaddr:$src),
-            (STXVRBX (COPY_TO_REGCLASS $rS, VSRC), xoaddr:$src)>;
-  def : Pat<(truncstorei16 (i32 (vector_extract v8i16:$rS, 0)), xoaddr:$src),
-            (STXVRHX (COPY_TO_REGCLASS $rS, VSRC), xoaddr:$src)>;
-  def : Pat<(store (i32 (vector_extract v4i32:$rS, 0)), xoaddr:$src),
-            (STXVRWX (COPY_TO_REGCLASS $rS, VSRC), xoaddr:$src)>;
-  def : Pat<(store (i64 (vector_extract v2i64:$rS, 0)), xoaddr:$src),
-            (STXVRDX (COPY_TO_REGCLASS $rS, VSRC), xoaddr:$src)>;
-}
+let AddedComplexity = 400, Predicates = [IsISA3_1, IsLittleEndian] in {
+  // Store element 0 of a VSX register to memory
+  def : Pat<(truncstorei8 (i32 (vector_extract v16i8:$src, 0)), xoaddr:$dst),
+            (STXVRBX (COPY_TO_REGCLASS v16i8:$src, VSRC), xoaddr:$dst)>;
+  def : Pat<(truncstorei16 (i32 (vector_extract v8i16:$src, 0)), xoaddr:$dst),
+            (STXVRHX (COPY_TO_REGCLASS v8i16:$src, VSRC), xoaddr:$dst)>;
+  def : Pat<(store (i32 (extractelt v4i32:$src, 0)), xoaddr:$dst),
+            (STXVRWX (COPY_TO_REGCLASS v4i32:$src, VSRC), xoaddr:$dst)>;
+  def : Pat<(store (f32 (extractelt v4f32:$src, 0)), xoaddr:$dst),
+            (STXVRWX (COPY_TO_REGCLASS v4f32:$src, VSRC), xoaddr:$dst)>;
+  def : Pat<(store (i64 (extractelt v2i64:$src, 0)), xoaddr:$dst),
+            (STXVRDX (COPY_TO_REGCLASS v2i64:$src, VSRC), xoaddr:$dst)>;
+  def : Pat<(store (f64 (extractelt v2f64:$src, 0)), xoaddr:$dst),
+            (STXVRDX (COPY_TO_REGCLASS v2f64:$src, VSRC), xoaddr:$dst)>;
+ }
 
 class xxevalPattern <dag pattern, bits<8> imm> :
   Pat<(v4i32 pattern), (XXEVAL $vA, $vB, $vC, imm)> {}
Index: llvm/test/CodeGen/PowerPC/builtins-ppc-p10vsx.ll
===================================================================
--- llvm/test/CodeGen/PowerPC/builtins-ppc-p10vsx.ll
+++ llvm/test/CodeGen/PowerPC/builtins-ppc-p10vsx.ll
@@ -1,13 +1,13 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu \
 ; RUN:   -mcpu=pwr10 -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | \
-; RUN:   FileCheck %s
+; RUN:   FileCheck %s --check-prefixes=CHECK,CHECK-LE
 ; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu \
 ; RUN:   -mcpu=pwr10 -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | \
-; RUN:   FileCheck %s
+; RUN:   FileCheck %s --check-prefixes=CHECK,CHECK-BE
 ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -O0 \
 ; RUN:   -mcpu=pwr10 -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | \
-; RUN:   FileCheck %s --check-prefix=CHECK-O0
+; RUN:   FileCheck %s --check-prefixes=CHECK,CHECK-O0
 
 ; These test cases aims to test the builtins for the Power10 VSX vector
 ; instructions introduced in ISA 3.1.
@@ -22,14 +22,6 @@
 ; CHECK-NEXT:    srwi r3, r3, 31
 ; CHECK-NEXT:    extsw r3, r3
 ; CHECK-NEXT:    blr
-;
-; CHECK-O0-LABEL: test_vec_test_lsbb_all_ones:
-; CHECK-O0:       # %bb.0: # %entry
-; CHECK-O0-NEXT:    xvtlsbb cr0, v2
-; CHECK-O0-NEXT:    mfocrf r3, 128
-; CHECK-O0-NEXT:    srwi r3, r3, 31
-; CHECK-O0-NEXT:    extsw r3, r3
-; CHECK-O0-NEXT:    blr
 entry:
   %0 = tail call i32 @llvm.ppc.vsx.xvtlsbb(<16 x i8> %vuca, i32 1)
   ret i32 %0
@@ -43,24 +35,22 @@
 ; CHECK-NEXT:    rlwinm r3, r3, 3, 31, 31
 ; CHECK-NEXT:    extsw r3, r3
 ; CHECK-NEXT:    blr
-;
-; CHECK-O0-LABEL: test_vec_test_lsbb_all_zeros:
-; CHECK-O0:       # %bb.0: # %entry
-; CHECK-O0-NEXT:    xvtlsbb cr0, v2
-; CHECK-O0-NEXT:    mfocrf r3, 128
-; CHECK-O0-NEXT:    rlwinm r3, r3, 3, 31, 31
-; CHECK-O0-NEXT:    extsw r3, r3
-; CHECK-O0-NEXT:    blr
 entry:
   %0 = tail call i32 @llvm.ppc.vsx.xvtlsbb(<16 x i8> %vuca, i32 0)
   ret i32 %0
 }
 
 define void @vec_xst_trunc_sc(<1 x i128> %__vec, i64 %__offset, i8* nocapture %__ptr) {
-; CHECK-LABEL: vec_xst_trunc_sc:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    stxvrbx v2, r6, r5
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xst_trunc_sc:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    stxvrbx v2, r6, r5
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xst_trunc_sc:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    vsldoi v2, v2, v2, 9
+; CHECK-BE-NEXT:    stxsibx v2, r6, r5
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xst_trunc_sc:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -79,10 +69,16 @@
 }
 
 define void @vec_xst_trunc_uc(<1 x i128> %__vec, i64 %__offset, i8* nocapture %__ptr) {
-; CHECK-LABEL: vec_xst_trunc_uc:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    stxvrbx v2, r6, r5
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xst_trunc_uc:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    stxvrbx v2, r6, r5
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xst_trunc_uc:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    vsldoi v2, v2, v2, 9
+; CHECK-BE-NEXT:    stxsibx v2, r6, r5
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xst_trunc_uc:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -101,11 +97,18 @@
 }
 
 define void @vec_xst_trunc_ss(<1 x i128> %__vec, i64 %__offset, i16* nocapture %__ptr) {
-; CHECK-LABEL: vec_xst_trunc_ss:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    sldi r3, r5, 1
-; CHECK-NEXT:    stxvrhx v2, r6, r3
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xst_trunc_ss:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    sldi r3, r5, 1
+; CHECK-LE-NEXT:    stxvrhx v2, r6, r3
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xst_trunc_ss:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    vsldoi v2, v2, v2, 10
+; CHECK-BE-NEXT:    sldi r3, r5, 1
+; CHECK-BE-NEXT:    stxsihx v2, r6, r3
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xst_trunc_ss:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -125,11 +128,18 @@
 }
 
 define void @vec_xst_trunc_us(<1 x i128> %__vec, i64 %__offset, i16* nocapture %__ptr) {
-; CHECK-LABEL: vec_xst_trunc_us:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    sldi r3, r5, 1
-; CHECK-NEXT:    stxvrhx v2, r6, r3
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xst_trunc_us:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    sldi r3, r5, 1
+; CHECK-LE-NEXT:    stxvrhx v2, r6, r3
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xst_trunc_us:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    vsldoi v2, v2, v2, 10
+; CHECK-BE-NEXT:    sldi r3, r5, 1
+; CHECK-BE-NEXT:    stxsihx v2, r6, r3
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xst_trunc_us:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -149,11 +159,18 @@
 }
 
 define void @vec_xst_trunc_si(<1 x i128> %__vec, i64 %__offset, i32* nocapture %__ptr) {
-; CHECK-LABEL: vec_xst_trunc_si:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    sldi r3, r5, 2
-; CHECK-NEXT:    stxvrwx v2, r6, r3
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xst_trunc_si:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    sldi r3, r5, 2
+; CHECK-LE-NEXT:    stxvrwx v2, r6, r3
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xst_trunc_si:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    xxsldwi vs0, v2, v2, 3
+; CHECK-BE-NEXT:    sldi r3, r5, 2
+; CHECK-BE-NEXT:    stfiwx f0, r6, r3
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xst_trunc_si:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -173,11 +190,18 @@
 }
 
 define void @vec_xst_trunc_ui(<1 x i128> %__vec, i64 %__offset, i32* nocapture %__ptr) {
-; CHECK-LABEL: vec_xst_trunc_ui:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    sldi r3, r5, 2
-; CHECK-NEXT:    stxvrwx v2, r6, r3
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xst_trunc_ui:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    sldi r3, r5, 2
+; CHECK-LE-NEXT:    stxvrwx v2, r6, r3
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xst_trunc_ui:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    xxsldwi vs0, v2, v2, 3
+; CHECK-BE-NEXT:    sldi r3, r5, 2
+; CHECK-BE-NEXT:    stfiwx f0, r6, r3
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xst_trunc_ui:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -197,11 +221,17 @@
 }
 
 define void @vec_xst_trunc_sll(<1 x i128> %__vec, i64 %__offset, i64* nocapture %__ptr)  {
-; CHECK-LABEL: vec_xst_trunc_sll:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    sldi r3, r5, 3
-; CHECK-NEXT:    stxvrdx v2, r6, r3
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xst_trunc_sll:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    sldi r3, r5, 3
+; CHECK-LE-NEXT:    stxvrdx v2, r6, r3
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xst_trunc_sll:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    sldi r3, r5, 3
+; CHECK-BE-NEXT:    stxsdx v2, r6, r3
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xst_trunc_sll:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -219,11 +249,17 @@
 }
 
 define void @vec_xst_trunc_ull(<1 x i128> %__vec, i64 %__offset, i64* nocapture %__ptr)  {
-; CHECK-LABEL: vec_xst_trunc_ull:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    sldi r3, r5, 3
-; CHECK-NEXT:    stxvrdx v2, r6, r3
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xst_trunc_ull:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    sldi r3, r5, 3
+; CHECK-LE-NEXT:    stxvrdx v2, r6, r3
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xst_trunc_ull:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    sldi r3, r5, 3
+; CHECK-BE-NEXT:    stxsdx v2, r6, r3
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xst_trunc_ull:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -245,11 +281,6 @@
 ; CHECK:       # %bb.0: # %entry
 ; CHECK-NEXT:    lxvrbx v2, r4, r3
 ; CHECK-NEXT:    blr
-;
-; CHECK-O0-LABEL: vec_xl_zext:
-; CHECK-O0:       # %bb.0: # %entry
-; CHECK-O0-NEXT:    lxvrbx v2, r4, r3
-; CHECK-O0-NEXT:    blr
 entry:
   %add.ptr = getelementptr inbounds i8, i8* %__pointer, i64 %__offset
   %0 = load i8, i8* %add.ptr, align 1
@@ -264,12 +295,6 @@
 ; CHECK-NEXT:    sldi r3, r3, 1
 ; CHECK-NEXT:    lxvrhx v2, r4, r3
 ; CHECK-NEXT:    blr
-;
-; CHECK-O0-LABEL: vec_xl_zext_short:
-; CHECK-O0:       # %bb.0: # %entry
-; CHECK-O0-NEXT:    sldi r3, r3, 1
-; CHECK-O0-NEXT:    lxvrhx v2, r4, r3
-; CHECK-O0-NEXT:    blr
 entry:
   %add.ptr = getelementptr inbounds i16, i16* %__pointer, i64 %__offset
   %0 = load i16, i16* %add.ptr, align 2
@@ -284,12 +309,6 @@
 ; CHECK-NEXT:    sldi r3, r3, 2
 ; CHECK-NEXT:    lxvrwx v2, r4, r3
 ; CHECK-NEXT:    blr
-;
-; CHECK-O0-LABEL: vec_xl_zext_word:
-; CHECK-O0:       # %bb.0: # %entry
-; CHECK-O0-NEXT:    sldi r3, r3, 2
-; CHECK-O0-NEXT:    lxvrwx v2, r4, r3
-; CHECK-O0-NEXT:    blr
 entry:
   %add.ptr = getelementptr inbounds i32, i32* %__pointer, i64 %__offset
   %0 = load i32, i32* %add.ptr, align 4
@@ -304,12 +323,6 @@
 ; CHECK-NEXT:    sldi r3, r3, 3
 ; CHECK-NEXT:    lxvrdx v2, r4, r3
 ; CHECK-NEXT:    blr
-;
-; CHECK-O0-LABEL: vec_xl_zext_dw:
-; CHECK-O0:       # %bb.0: # %entry
-; CHECK-O0-NEXT:    sldi r3, r3, 3
-; CHECK-O0-NEXT:    lxvrdx v2, r4, r3
-; CHECK-O0-NEXT:    blr
 entry:
   %add.ptr = getelementptr inbounds i64, i64* %__pointer, i64 %__offset
   %0 = load i64, i64* %add.ptr, align 8
@@ -319,13 +332,21 @@
 }
 
 define dso_local <1 x i128> @vec_xl_sext_b(i64 %offset, i8* %p) {
-; CHECK-LABEL: vec_xl_sext_b:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    lbzx r3, r4, r3
-; CHECK-NEXT:    extsb r3, r3
-; CHECK-NEXT:    sradi r4, r3, 63
-; CHECK-NEXT:    mtvsrdd v2, r4, r3
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xl_sext_b:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    lbzx r3, r4, r3
+; CHECK-LE-NEXT:    extsb r3, r3
+; CHECK-LE-NEXT:    sradi r4, r3, 63
+; CHECK-LE-NEXT:    mtvsrdd v2, r4, r3
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xl_sext_b:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    lbzx r3, r4, r3
+; CHECK-BE-NEXT:    extsb r3, r3
+; CHECK-BE-NEXT:    sradi r4, r3, 63
+; CHECK-BE-NEXT:    mtvsrdd v2, r4, r3
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xl_sext_b:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -343,13 +364,21 @@
 }
 
 define dso_local <1 x i128> @vec_xl_sext_h(i64 %offset, i16* %p) {
-; CHECK-LABEL: vec_xl_sext_h:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    sldi r3, r3, 1
-; CHECK-NEXT:    lhax r3, r4, r3
-; CHECK-NEXT:    sradi r4, r3, 63
-; CHECK-NEXT:    mtvsrdd v2, r4, r3
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xl_sext_h:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    sldi r3, r3, 1
+; CHECK-LE-NEXT:    lhax r3, r4, r3
+; CHECK-LE-NEXT:    sradi r4, r3, 63
+; CHECK-LE-NEXT:    mtvsrdd v2, r4, r3
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xl_sext_h:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    sldi r3, r3, 1
+; CHECK-BE-NEXT:    lhax r3, r4, r3
+; CHECK-BE-NEXT:    sradi r4, r3, 63
+; CHECK-BE-NEXT:    mtvsrdd v2, r4, r3
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xl_sext_h:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -367,13 +396,21 @@
 }
 
 define dso_local <1 x i128> @vec_xl_sext_w(i64 %offset, i32* %p) {
-; CHECK-LABEL: vec_xl_sext_w:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    sldi r3, r3, 2
-; CHECK-NEXT:    lwax r3, r4, r3
-; CHECK-NEXT:    sradi r4, r3, 63
-; CHECK-NEXT:    mtvsrdd v2, r4, r3
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xl_sext_w:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    sldi r3, r3, 2
+; CHECK-LE-NEXT:    lwax r3, r4, r3
+; CHECK-LE-NEXT:    sradi r4, r3, 63
+; CHECK-LE-NEXT:    mtvsrdd v2, r4, r3
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xl_sext_w:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    sldi r3, r3, 2
+; CHECK-BE-NEXT:    lwax r3, r4, r3
+; CHECK-BE-NEXT:    sradi r4, r3, 63
+; CHECK-BE-NEXT:    mtvsrdd v2, r4, r3
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xl_sext_w:
 ; CHECK-O0:       # %bb.0: # %entry
@@ -391,13 +428,21 @@
 }
 
 define dso_local <1 x i128> @vec_xl_sext_d(i64 %offset, i64* %p) {
-; CHECK-LABEL: vec_xl_sext_d:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    sldi r3, r3, 3
-; CHECK-NEXT:    ldx r3, r4, r3
-; CHECK-NEXT:    sradi r4, r3, 63
-; CHECK-NEXT:    mtvsrdd v2, r4, r3
-; CHECK-NEXT:    blr
+; CHECK-LE-LABEL: vec_xl_sext_d:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    sldi r3, r3, 3
+; CHECK-LE-NEXT:    ldx r3, r4, r3
+; CHECK-LE-NEXT:    sradi r4, r3, 63
+; CHECK-LE-NEXT:    mtvsrdd v2, r4, r3
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: vec_xl_sext_d:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    sldi r3, r3, 3
+; CHECK-BE-NEXT:    ldx r3, r4, r3
+; CHECK-BE-NEXT:    sradi r4, r3, 63
+; CHECK-BE-NEXT:    mtvsrdd v2, r4, r3
+; CHECK-BE-NEXT:    blr
 ;
 ; CHECK-O0-LABEL: vec_xl_sext_d:
 ; CHECK-O0:       # %bb.0: # %entry
Index: llvm/test/CodeGen/PowerPC/store-rightmost-vector-elt.ll
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/PowerPC/store-rightmost-vector-elt.ll
@@ -0,0 +1,109 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu \
+; RUN:     -mcpu=pwr10 -ppc-vsr-nums-as-vr -ppc-asm-full-reg-names \
+; RUN:     < %s | FileCheck %s --check-prefix=CHECK-LE
+
+; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu \
+; RUN:     -mcpu=pwr10 -ppc-vsr-nums-as-vr -ppc-asm-full-reg-names \
+; RUN:     < %s | FileCheck %s --check-prefix=CHECK-BE
+
+define void @test1(<4 x i32> %A, i32* %a) {
+; CHECK-LE-LABEL: test1:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    stxvrwx v2, 0, r5
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: test1:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    xxsldwi vs0, v2, v2, 3
+; CHECK-BE-NEXT:    stfiwx f0, 0, r5
+; CHECK-BE-NEXT:    blr
+entry:
+  %vecext = extractelement <4 x i32> %A, i32 0
+  store i32 %vecext, i32* %a, align 4
+  ret void
+}
+
+define void @test2(<4 x float> %A, float* %a) {
+; CHECK-LE-LABEL: test2:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    stxvrwx v2, 0, r5
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: test2:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    xxsldwi vs0, v2, v2, 3
+; CHECK-BE-NEXT:    stfiwx f0, 0, r5
+; CHECK-BE-NEXT:    blr
+entry:
+  %vecext = extractelement <4 x float> %A, i32 0
+  store float %vecext, float* %a, align 4
+  ret void
+}
+
+define void @test3(<2 x double> %A, double* %a) {
+; CHECK-LE-LABEL: test3:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    stxvrdx v2, 0, r5
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: test3:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    stxsd v2, 0(r5)
+; CHECK-BE-NEXT:    blr
+entry:
+  %vecext = extractelement <2 x double> %A, i32 0
+  store double %vecext, double* %a, align 8
+  ret void
+}
+
+define void @test4(<2 x i64> %A, i64* %a) {
+; CHECK-LE-LABEL: test4:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    stxvrdx v2, 0, r5
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: test4:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    stxsd v2, 0(r5)
+; CHECK-BE-NEXT:    blr
+entry:
+  %vecext = extractelement <2 x i64> %A, i32 0
+  store i64 %vecext, i64* %a, align 8
+  ret void
+}
+
+define void @test5(<8 x i16> %A, i16* %a) {
+; CHECK-LE-LABEL: test5:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    stxvrhx v2, 0, r5
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: test5:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    vsldoi v2, v2, v2, 10
+; CHECK-BE-NEXT:    stxsihx v2, 0, r5
+; CHECK-BE-NEXT:    blr
+entry:
+  %vecext = extractelement <8 x i16> %A, i32 0
+  store i16 %vecext, i16* %a, align 2
+  ret void
+}
+
+define void @test6(<16 x i8> %A, i8* %a) {
+; CHECK-LE-LABEL: test6:
+; CHECK-LE:       # %bb.0: # %entry
+; CHECK-LE-NEXT:    stxvrbx v2, 0, r5
+; CHECK-LE-NEXT:    blr
+;
+; CHECK-BE-LABEL: test6:
+; CHECK-BE:       # %bb.0: # %entry
+; CHECK-BE-NEXT:    vsldoi v2, v2, v2, 9
+; CHECK-BE-NEXT:    stxsibx v2, 0, r5
+; CHECK-BE-NEXT:    blr
+entry:
+  %vecext = extractelement <16 x i8> %A, i32 0
+  store i8 %vecext, i8* %a, align 1
+  ret void
+}
+