diff --git a/llvm/lib/Target/VE/VEInstrInfo.td b/llvm/lib/Target/VE/VEInstrInfo.td
--- a/llvm/lib/Target/VE/VEInstrInfo.td
+++ b/llvm/lib/Target/VE/VEInstrInfo.td
@@ -1733,6 +1733,40 @@
 defm : ZXATMLD32m<atomic_load_32, 0xFFFFFFFF, LDLZXrri, LDLZXrii, LDLZXzri,
                   LDLZXzii>;
 
+// Atomic stores
+multiclass ATMSTm<SDPatternOperator from, ValueType ty,
+                  SDPatternOperator torri, SDPatternOperator torii,
+                  SDPatternOperator tozri, SDPatternOperator tozii> {
+  def : Pat<(from ADDRrri:$addr, ty:$src), (torri MEMrri:$addr, $src)>;
+  def : Pat<(from ADDRrii:$addr, ty:$src), (torii MEMrii:$addr, $src)>;
+  def : Pat<(from ADDRzri:$addr, ty:$src), (tozri MEMzri:$addr, $src)>;
+  def : Pat<(from ADDRzii:$addr, ty:$src), (tozii MEMzii:$addr, $src)>;
+}
+defm : ATMSTm<atomic_store_8, i32, ST1Brri, ST1Brii, ST1Bzri, ST1Bzii>;
+defm : ATMSTm<atomic_store_16, i32, ST2Brri, ST2Brii, ST2Bzri, ST2Bzii>;
+defm : ATMSTm<atomic_store_32, i32, STLrri, STLrii, STLzri, STLzii>;
+defm : ATMSTm<atomic_store_64, i64, STrri, STrii, STzri, STzii>;
+
+// Optimized atomic stores with truncate
+multiclass TRATMSTm<SDPatternOperator from,
+                  ValueType ty,
+                  SDPatternOperator torri,
+                  SDPatternOperator torii,
+                  SDPatternOperator tozri,
+                  SDPatternOperator tozii> {
+  def : Pat<(from ADDRrri:$addr, (i32 (trunc i64:$src))),
+            (torri MEMrri:$addr, (EXTRACT_SUBREG $src, sub_i32))>;
+  def : Pat<(from ADDRrii:$addr, (i32 (trunc i64:$src))),
+            (torii MEMrii:$addr, (EXTRACT_SUBREG $src, sub_i32))>;
+  def : Pat<(from ADDRzri:$addr, (i32 (trunc i64:$src))),
+            (tozri MEMzri:$addr, (EXTRACT_SUBREG $src, sub_i32))>;
+  def : Pat<(from ADDRzii:$addr, (i32 (trunc i64:$src))),
+            (tozii MEMzii:$addr, (EXTRACT_SUBREG $src, sub_i32))>;
+}
+defm : TRATMSTm<atomic_store_8, i32, ST1Brri, ST1Brii, ST1Bzri, ST1Bzii>;
+defm : TRATMSTm<atomic_store_16, i32, ST2Brri, ST2Brii, ST2Bzri, ST2Bzii>;
+defm : TRATMSTm<atomic_store_32, i32, STLrri, STLrii, STLzri, STLzii>;
+
 // Address calculation and its optimization
 def : Pat<(VEhi tconstpool:$in), (LEASLzii 0, 0, tconstpool:$in)>;
 def : Pat<(VElo tconstpool:$in),
diff --git a/llvm/test/CodeGen/VE/atomic_store.ll b/llvm/test/CodeGen/VE/atomic_store.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/VE/atomic_store.ll
@@ -0,0 +1,559 @@
+; RUN: llc < %s -mtriple=ve | FileCheck %s
+
+;;; Test atomic store for all types and all memory order
+;;;
+;;; Note:
+;;;   We test i1/i8/i16/i32/i64/i128/u8/u16/u32/u64/u128.
+;;;   We test relaxed, release, and seq_cst.
+
+%"struct.std::__1::atomic" = type { %"struct.std::__1::__atomic_base" }
+%"struct.std::__1::__atomic_base" = type { %"struct.std::__1::__cxx_atomic_impl" }
+%"struct.std::__1::__cxx_atomic_impl" = type { %"struct.std::__1::__cxx_atomic_base_impl" }
+%"struct.std::__1::__cxx_atomic_base_impl" = type { i8 }
+%"struct.std::__1::atomic.0" = type { %"struct.std::__1::__atomic_base.1" }
+%"struct.std::__1::__atomic_base.1" = type { %"struct.std::__1::__atomic_base.2" }
+%"struct.std::__1::__atomic_base.2" = type { %"struct.std::__1::__cxx_atomic_impl.3" }
+%"struct.std::__1::__cxx_atomic_impl.3" = type { %"struct.std::__1::__cxx_atomic_base_impl.4" }
+%"struct.std::__1::__cxx_atomic_base_impl.4" = type { i8 }
+%"struct.std::__1::atomic.5" = type { %"struct.std::__1::__atomic_base.6" }
+%"struct.std::__1::__atomic_base.6" = type { %"struct.std::__1::__atomic_base.7" }
+%"struct.std::__1::__atomic_base.7" = type { %"struct.std::__1::__cxx_atomic_impl.8" }
+%"struct.std::__1::__cxx_atomic_impl.8" = type { %"struct.std::__1::__cxx_atomic_base_impl.9" }
+%"struct.std::__1::__cxx_atomic_base_impl.9" = type { i8 }
+%"struct.std::__1::atomic.10" = type { %"struct.std::__1::__atomic_base.11" }
+%"struct.std::__1::__atomic_base.11" = type { %"struct.std::__1::__atomic_base.12" }
+%"struct.std::__1::__atomic_base.12" = type { %"struct.std::__1::__cxx_atomic_impl.13" }
+%"struct.std::__1::__cxx_atomic_impl.13" = type { %"struct.std::__1::__cxx_atomic_base_impl.14" }
+%"struct.std::__1::__cxx_atomic_base_impl.14" = type { i16 }
+%"struct.std::__1::atomic.15" = type { %"struct.std::__1::__atomic_base.16" }
+%"struct.std::__1::__atomic_base.16" = type { %"struct.std::__1::__atomic_base.17" }
+%"struct.std::__1::__atomic_base.17" = type { %"struct.std::__1::__cxx_atomic_impl.18" }
+%"struct.std::__1::__cxx_atomic_impl.18" = type { %"struct.std::__1::__cxx_atomic_base_impl.19" }
+%"struct.std::__1::__cxx_atomic_base_impl.19" = type { i16 }
+%"struct.std::__1::atomic.20" = type { %"struct.std::__1::__atomic_base.21" }
+%"struct.std::__1::__atomic_base.21" = type { %"struct.std::__1::__atomic_base.22" }
+%"struct.std::__1::__atomic_base.22" = type { %"struct.std::__1::__cxx_atomic_impl.23" }
+%"struct.std::__1::__cxx_atomic_impl.23" = type { %"struct.std::__1::__cxx_atomic_base_impl.24" }
+%"struct.std::__1::__cxx_atomic_base_impl.24" = type { i32 }
+%"struct.std::__1::atomic.25" = type { %"struct.std::__1::__atomic_base.26" }
+%"struct.std::__1::__atomic_base.26" = type { %"struct.std::__1::__atomic_base.27" }
+%"struct.std::__1::__atomic_base.27" = type { %"struct.std::__1::__cxx_atomic_impl.28" }
+%"struct.std::__1::__cxx_atomic_impl.28" = type { %"struct.std::__1::__cxx_atomic_base_impl.29" }
+%"struct.std::__1::__cxx_atomic_base_impl.29" = type { i32 }
+%"struct.std::__1::atomic.30" = type { %"struct.std::__1::__atomic_base.31" }
+%"struct.std::__1::__atomic_base.31" = type { %"struct.std::__1::__atomic_base.32" }
+%"struct.std::__1::__atomic_base.32" = type { %"struct.std::__1::__cxx_atomic_impl.33" }
+%"struct.std::__1::__cxx_atomic_impl.33" = type { %"struct.std::__1::__cxx_atomic_base_impl.34" }
+%"struct.std::__1::__cxx_atomic_base_impl.34" = type { i64 }
+%"struct.std::__1::atomic.35" = type { %"struct.std::__1::__atomic_base.36" }
+%"struct.std::__1::__atomic_base.36" = type { %"struct.std::__1::__atomic_base.37" }
+%"struct.std::__1::__atomic_base.37" = type { %"struct.std::__1::__cxx_atomic_impl.38" }
+%"struct.std::__1::__cxx_atomic_impl.38" = type { %"struct.std::__1::__cxx_atomic_base_impl.39" }
+%"struct.std::__1::__cxx_atomic_base_impl.39" = type { i64 }
+%"struct.std::__1::atomic.40" = type { %"struct.std::__1::__atomic_base.41" }
+%"struct.std::__1::__atomic_base.41" = type { %"struct.std::__1::__atomic_base.42" }
+%"struct.std::__1::__atomic_base.42" = type { %"struct.std::__1::__cxx_atomic_impl.43" }
+%"struct.std::__1::__cxx_atomic_impl.43" = type { %"struct.std::__1::__cxx_atomic_base_impl.44" }
+%"struct.std::__1::__cxx_atomic_base_impl.44" = type { i128 }
+%"struct.std::__1::atomic.45" = type { %"struct.std::__1::__atomic_base.46" }
+%"struct.std::__1::__atomic_base.46" = type { %"struct.std::__1::__atomic_base.47" }
+%"struct.std::__1::__atomic_base.47" = type { %"struct.std::__1::__cxx_atomic_impl.48" }
+%"struct.std::__1::__cxx_atomic_impl.48" = type { %"struct.std::__1::__cxx_atomic_base_impl.49" }
+%"struct.std::__1::__cxx_atomic_base_impl.49" = type { i128 }
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z23atomic_store_relaxed_i1RNSt3__16atomicIbEEb(%"struct.std::__1::atomic"* nocapture nonnull align 1 dereferenceable(1) %0, i1 zeroext %1) {
+; CHECK-LABEL: _Z23atomic_store_relaxed_i1RNSt3__16atomicIbEEb:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    st1b %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = zext i1 %1 to i8
+  %4 = getelementptr inbounds %"struct.std::__1::atomic", %"struct.std::__1::atomic"* %0, i64 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i8 %3, i8* %4 monotonic, align 1
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z23atomic_store_relaxed_i8RNSt3__16atomicIcEEc(%"struct.std::__1::atomic.0"* nocapture nonnull align 1 dereferenceable(1) %0, i8 signext %1) {
+; CHECK-LABEL: _Z23atomic_store_relaxed_i8RNSt3__16atomicIcEEc:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    st1b %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.0", %"struct.std::__1::atomic.0"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i8 %1, i8* %3 monotonic, align 1
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z23atomic_store_relaxed_u8RNSt3__16atomicIhEEh(%"struct.std::__1::atomic.5"* nocapture nonnull align 1 dereferenceable(1) %0, i8 zeroext %1) {
+; CHECK-LABEL: _Z23atomic_store_relaxed_u8RNSt3__16atomicIhEEh:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    st1b %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.5", %"struct.std::__1::atomic.5"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i8 %1, i8* %3 monotonic, align 1
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_relaxed_i16RNSt3__16atomicIsEEs(%"struct.std::__1::atomic.10"* nocapture nonnull align 2 dereferenceable(2) %0, i16 signext %1) {
+; CHECK-LABEL: _Z24atomic_store_relaxed_i16RNSt3__16atomicIsEEs:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    st2b %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.10", %"struct.std::__1::atomic.10"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i16 %1, i16* %3 monotonic, align 2
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_relaxed_u16RNSt3__16atomicItEEt(%"struct.std::__1::atomic.15"* nocapture nonnull align 2 dereferenceable(2) %0, i16 zeroext %1) {
+; CHECK-LABEL: _Z24atomic_store_relaxed_u16RNSt3__16atomicItEEt:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    st2b %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.15", %"struct.std::__1::atomic.15"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i16 %1, i16* %3 monotonic, align 2
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_relaxed_i32RNSt3__16atomicIiEEi(%"struct.std::__1::atomic.20"* nocapture nonnull align 4 dereferenceable(4) %0, i32 signext %1) {
+; CHECK-LABEL: _Z24atomic_store_relaxed_i32RNSt3__16atomicIiEEi:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    stl %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.20", %"struct.std::__1::atomic.20"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i32 %1, i32* %3 monotonic, align 4
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_relaxed_u32RNSt3__16atomicIjEEj(%"struct.std::__1::atomic.25"* nocapture nonnull align 4 dereferenceable(4) %0, i32 zeroext %1) {
+; CHECK-LABEL: _Z24atomic_store_relaxed_u32RNSt3__16atomicIjEEj:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    stl %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.25", %"struct.std::__1::atomic.25"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i32 %1, i32* %3 monotonic, align 4
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_relaxed_i64RNSt3__16atomicIlEEl(%"struct.std::__1::atomic.30"* nocapture nonnull align 8 dereferenceable(8) %0, i64 %1) {
+; CHECK-LABEL: _Z24atomic_store_relaxed_i64RNSt3__16atomicIlEEl:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    st %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.30", %"struct.std::__1::atomic.30"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i64 %1, i64* %3 monotonic, align 8
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_relaxed_u64RNSt3__16atomicImEEm(%"struct.std::__1::atomic.35"* nocapture nonnull align 8 dereferenceable(8) %0, i64 %1) {
+; CHECK-LABEL: _Z24atomic_store_relaxed_u64RNSt3__16atomicImEEm:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    st %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.35", %"struct.std::__1::atomic.35"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i64 %1, i64* %3 monotonic, align 8
+  ret void
+}
+
+; Function Attrs: nounwind
+define void @_Z25atomic_store_relaxed_i128RNSt3__16atomicInEEn(%"struct.std::__1::atomic.40"* nonnull align 16 dereferenceable(16) %0, i128 %1) {
+; CHECK-LABEL: _Z25atomic_store_relaxed_i128RNSt3__16atomicInEEn:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    or %s4, 0, %s0
+; CHECK-NEXT:    st %s2, -8(, %s9)
+; CHECK-NEXT:    st %s1, -16(, %s9)
+; CHECK-NEXT:    lea %s0, __atomic_store@lo
+; CHECK-NEXT:    and %s0, %s0, (32)0
+; CHECK-NEXT:    lea.sl %s12, __atomic_store@hi(, %s0)
+; CHECK-NEXT:    or %s0, 16, (0)1
+; CHECK-NEXT:    lea %s2, -16(, %s9)
+; CHECK-NEXT:    or %s3, 0, (0)1
+; CHECK-NEXT:    or %s1, 0, %s4
+; CHECK-NEXT:    bsic %s10, (, %s12)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = alloca i128, align 16
+  %4 = bitcast i128* %3 to i8*
+  call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %4)
+  store i128 %1, i128* %3, align 16, !tbaa !2
+  %5 = bitcast %"struct.std::__1::atomic.40"* %0 to i8*
+  call void @__atomic_store(i64 16, i8* nonnull %5, i8* nonnull %4, i32 signext 0)
+  call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %4)
+  ret void
+}
+
+; Function Attrs: nounwind
+define void @_Z25atomic_store_relaxed_u128RNSt3__16atomicIoEEo(%"struct.std::__1::atomic.45"* nonnull align 16 dereferenceable(16) %0, i128 %1) {
+; CHECK-LABEL: _Z25atomic_store_relaxed_u128RNSt3__16atomicIoEEo:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    or %s4, 0, %s0
+; CHECK-NEXT:    st %s2, -8(, %s9)
+; CHECK-NEXT:    st %s1, -16(, %s9)
+; CHECK-NEXT:    lea %s0, __atomic_store@lo
+; CHECK-NEXT:    and %s0, %s0, (32)0
+; CHECK-NEXT:    lea.sl %s12, __atomic_store@hi(, %s0)
+; CHECK-NEXT:    or %s0, 16, (0)1
+; CHECK-NEXT:    lea %s2, -16(, %s9)
+; CHECK-NEXT:    or %s3, 0, (0)1
+; CHECK-NEXT:    or %s1, 0, %s4
+; CHECK-NEXT:    bsic %s10, (, %s12)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = alloca i128, align 16
+  %4 = bitcast i128* %3 to i8*
+  call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %4)
+  store i128 %1, i128* %3, align 16, !tbaa !2
+  %5 = bitcast %"struct.std::__1::atomic.45"* %0 to i8*
+  call void @__atomic_store(i64 16, i8* nonnull %5, i8* nonnull %4, i32 signext 0)
+  call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %4)
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z23atomic_store_release_i1RNSt3__16atomicIbEEb(%"struct.std::__1::atomic"* nocapture nonnull align 1 dereferenceable(1) %0, i1 zeroext %1) {
+; CHECK-LABEL: _Z23atomic_store_release_i1RNSt3__16atomicIbEEb:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 1
+; CHECK-NEXT:    st1b %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = zext i1 %1 to i8
+  %4 = getelementptr inbounds %"struct.std::__1::atomic", %"struct.std::__1::atomic"* %0, i64 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i8 %3, i8* %4 release, align 1
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z23atomic_store_release_i8RNSt3__16atomicIcEEc(%"struct.std::__1::atomic.0"* nocapture nonnull align 1 dereferenceable(1) %0, i8 signext %1) {
+; CHECK-LABEL: _Z23atomic_store_release_i8RNSt3__16atomicIcEEc:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 1
+; CHECK-NEXT:    st1b %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.0", %"struct.std::__1::atomic.0"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i8 %1, i8* %3 release, align 1
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z23atomic_store_release_u8RNSt3__16atomicIhEEh(%"struct.std::__1::atomic.5"* nocapture nonnull align 1 dereferenceable(1) %0, i8 zeroext %1) {
+; CHECK-LABEL: _Z23atomic_store_release_u8RNSt3__16atomicIhEEh:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 1
+; CHECK-NEXT:    st1b %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.5", %"struct.std::__1::atomic.5"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i8 %1, i8* %3 release, align 1
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_release_i16RNSt3__16atomicIsEEs(%"struct.std::__1::atomic.10"* nocapture nonnull align 2 dereferenceable(2) %0, i16 signext %1) {
+; CHECK-LABEL: _Z24atomic_store_release_i16RNSt3__16atomicIsEEs:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 1
+; CHECK-NEXT:    st2b %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.10", %"struct.std::__1::atomic.10"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i16 %1, i16* %3 release, align 2
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_release_u16RNSt3__16atomicItEEt(%"struct.std::__1::atomic.15"* nocapture nonnull align 2 dereferenceable(2) %0, i16 zeroext %1) {
+; CHECK-LABEL: _Z24atomic_store_release_u16RNSt3__16atomicItEEt:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 1
+; CHECK-NEXT:    st2b %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.15", %"struct.std::__1::atomic.15"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i16 %1, i16* %3 release, align 2
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_release_i32RNSt3__16atomicIiEEi(%"struct.std::__1::atomic.20"* nocapture nonnull align 4 dereferenceable(4) %0, i32 signext %1) {
+; CHECK-LABEL: _Z24atomic_store_release_i32RNSt3__16atomicIiEEi:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 1
+; CHECK-NEXT:    stl %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.20", %"struct.std::__1::atomic.20"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i32 %1, i32* %3 release, align 4
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_release_u32RNSt3__16atomicIjEEj(%"struct.std::__1::atomic.25"* nocapture nonnull align 4 dereferenceable(4) %0, i32 zeroext %1) {
+; CHECK-LABEL: _Z24atomic_store_release_u32RNSt3__16atomicIjEEj:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 1
+; CHECK-NEXT:    stl %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.25", %"struct.std::__1::atomic.25"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i32 %1, i32* %3 release, align 4
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_release_i64RNSt3__16atomicIlEEl(%"struct.std::__1::atomic.30"* nocapture nonnull align 8 dereferenceable(8) %0, i64 %1) {
+; CHECK-LABEL: _Z24atomic_store_release_i64RNSt3__16atomicIlEEl:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 1
+; CHECK-NEXT:    st %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.30", %"struct.std::__1::atomic.30"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i64 %1, i64* %3 release, align 8
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_release_u64RNSt3__16atomicImEEm(%"struct.std::__1::atomic.35"* nocapture nonnull align 8 dereferenceable(8) %0, i64 %1) {
+; CHECK-LABEL: _Z24atomic_store_release_u64RNSt3__16atomicImEEm:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 1
+; CHECK-NEXT:    st %s1, (, %s0)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.35", %"struct.std::__1::atomic.35"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i64 %1, i64* %3 release, align 8
+  ret void
+}
+
+; Function Attrs: nounwind
+define void @_Z25atomic_store_release_i128RNSt3__16atomicInEEn(%"struct.std::__1::atomic.40"* nonnull align 16 dereferenceable(16) %0, i128 %1) {
+; CHECK-LABEL: _Z25atomic_store_release_i128RNSt3__16atomicInEEn:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    or %s4, 0, %s0
+; CHECK-NEXT:    st %s2, -8(, %s9)
+; CHECK-NEXT:    st %s1, -16(, %s9)
+; CHECK-NEXT:    lea %s0, __atomic_store@lo
+; CHECK-NEXT:    and %s0, %s0, (32)0
+; CHECK-NEXT:    lea.sl %s12, __atomic_store@hi(, %s0)
+; CHECK-NEXT:    or %s0, 16, (0)1
+; CHECK-NEXT:    lea %s2, -16(, %s9)
+; CHECK-NEXT:    or %s3, 3, (0)1
+; CHECK-NEXT:    or %s1, 0, %s4
+; CHECK-NEXT:    bsic %s10, (, %s12)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = alloca i128, align 16
+  %4 = bitcast i128* %3 to i8*
+  call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %4)
+  store i128 %1, i128* %3, align 16, !tbaa !2
+  %5 = bitcast %"struct.std::__1::atomic.40"* %0 to i8*
+  call void @__atomic_store(i64 16, i8* nonnull %5, i8* nonnull %4, i32 signext 3)
+  call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %4)
+  ret void
+}
+
+; Function Attrs: nounwind
+define void @_Z25atomic_store_release_u128RNSt3__16atomicIoEEo(%"struct.std::__1::atomic.45"* nonnull align 16 dereferenceable(16) %0, i128 %1) {
+; CHECK-LABEL: _Z25atomic_store_release_u128RNSt3__16atomicIoEEo:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    or %s4, 0, %s0
+; CHECK-NEXT:    st %s2, -8(, %s9)
+; CHECK-NEXT:    st %s1, -16(, %s9)
+; CHECK-NEXT:    lea %s0, __atomic_store@lo
+; CHECK-NEXT:    and %s0, %s0, (32)0
+; CHECK-NEXT:    lea.sl %s12, __atomic_store@hi(, %s0)
+; CHECK-NEXT:    or %s0, 16, (0)1
+; CHECK-NEXT:    lea %s2, -16(, %s9)
+; CHECK-NEXT:    or %s3, 3, (0)1
+; CHECK-NEXT:    or %s1, 0, %s4
+; CHECK-NEXT:    bsic %s10, (, %s12)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = alloca i128, align 16
+  %4 = bitcast i128* %3 to i8*
+  call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %4)
+  store i128 %1, i128* %3, align 16, !tbaa !2
+  %5 = bitcast %"struct.std::__1::atomic.45"* %0 to i8*
+  call void @__atomic_store(i64 16, i8* nonnull %5, i8* nonnull %4, i32 signext 3)
+  call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %4)
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z23atomic_store_seq_cst_i1RNSt3__16atomicIbEEb(%"struct.std::__1::atomic"* nocapture nonnull align 1 dereferenceable(1) %0, i1 zeroext %1) {
+; CHECK-LABEL: _Z23atomic_store_seq_cst_i1RNSt3__16atomicIbEEb:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    st1b %s1, (, %s0)
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = zext i1 %1 to i8
+  %4 = getelementptr inbounds %"struct.std::__1::atomic", %"struct.std::__1::atomic"* %0, i64 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i8 %3, i8* %4 seq_cst, align 1
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z23atomic_store_seq_cst_i8RNSt3__16atomicIcEEc(%"struct.std::__1::atomic.0"* nocapture nonnull align 1 dereferenceable(1) %0, i8 signext %1) {
+; CHECK-LABEL: _Z23atomic_store_seq_cst_i8RNSt3__16atomicIcEEc:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    st1b %s1, (, %s0)
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.0", %"struct.std::__1::atomic.0"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i8 %1, i8* %3 seq_cst, align 1
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z23atomic_store_seq_cst_u8RNSt3__16atomicIhEEh(%"struct.std::__1::atomic.5"* nocapture nonnull align 1 dereferenceable(1) %0, i8 zeroext %1) {
+; CHECK-LABEL: _Z23atomic_store_seq_cst_u8RNSt3__16atomicIhEEh:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    st1b %s1, (, %s0)
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.5", %"struct.std::__1::atomic.5"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i8 %1, i8* %3 seq_cst, align 1
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_seq_cst_i16RNSt3__16atomicIsEEs(%"struct.std::__1::atomic.10"* nocapture nonnull align 2 dereferenceable(2) %0, i16 signext %1) {
+; CHECK-LABEL: _Z24atomic_store_seq_cst_i16RNSt3__16atomicIsEEs:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    st2b %s1, (, %s0)
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.10", %"struct.std::__1::atomic.10"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i16 %1, i16* %3 seq_cst, align 2
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_seq_cst_u16RNSt3__16atomicItEEt(%"struct.std::__1::atomic.15"* nocapture nonnull align 2 dereferenceable(2) %0, i16 zeroext %1) {
+; CHECK-LABEL: _Z24atomic_store_seq_cst_u16RNSt3__16atomicItEEt:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    st2b %s1, (, %s0)
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.15", %"struct.std::__1::atomic.15"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i16 %1, i16* %3 seq_cst, align 2
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_seq_cst_i32RNSt3__16atomicIiEEi(%"struct.std::__1::atomic.20"* nocapture nonnull align 4 dereferenceable(4) %0, i32 signext %1) {
+; CHECK-LABEL: _Z24atomic_store_seq_cst_i32RNSt3__16atomicIiEEi:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    stl %s1, (, %s0)
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.20", %"struct.std::__1::atomic.20"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i32 %1, i32* %3 seq_cst, align 4
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_seq_cst_u32RNSt3__16atomicIjEEj(%"struct.std::__1::atomic.25"* nocapture nonnull align 4 dereferenceable(4) %0, i32 zeroext %1) {
+; CHECK-LABEL: _Z24atomic_store_seq_cst_u32RNSt3__16atomicIjEEj:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    stl %s1, (, %s0)
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.25", %"struct.std::__1::atomic.25"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i32 %1, i32* %3 seq_cst, align 4
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_seq_cst_i64RNSt3__16atomicIlEEl(%"struct.std::__1::atomic.30"* nocapture nonnull align 8 dereferenceable(8) %0, i64 %1) {
+; CHECK-LABEL: _Z24atomic_store_seq_cst_i64RNSt3__16atomicIlEEl:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    st %s1, (, %s0)
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.30", %"struct.std::__1::atomic.30"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i64 %1, i64* %3 seq_cst, align 8
+  ret void
+}
+
+; Function Attrs: nofree norecurse nounwind
+define void @_Z24atomic_store_seq_cst_u64RNSt3__16atomicImEEm(%"struct.std::__1::atomic.35"* nocapture nonnull align 8 dereferenceable(8) %0, i64 %1) {
+; CHECK-LABEL: _Z24atomic_store_seq_cst_u64RNSt3__16atomicImEEm:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    st %s1, (, %s0)
+; CHECK-NEXT:    fencem 3
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = getelementptr inbounds %"struct.std::__1::atomic.35", %"struct.std::__1::atomic.35"* %0, i64 0, i32 0, i32 0, i32 0, i32 0, i32 0
+  store atomic i64 %1, i64* %3 seq_cst, align 8
+  ret void
+}
+
+; Function Attrs: nounwind
+define void @_Z25atomic_store_seq_cst_i128RNSt3__16atomicInEEn(%"struct.std::__1::atomic.40"* nonnull align 16 dereferenceable(16) %0, i128 %1) {
+; CHECK-LABEL: _Z25atomic_store_seq_cst_i128RNSt3__16atomicInEEn:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    or %s4, 0, %s0
+; CHECK-NEXT:    st %s2, -8(, %s9)
+; CHECK-NEXT:    st %s1, -16(, %s9)
+; CHECK-NEXT:    lea %s0, __atomic_store@lo
+; CHECK-NEXT:    and %s0, %s0, (32)0
+; CHECK-NEXT:    lea.sl %s12, __atomic_store@hi(, %s0)
+; CHECK-NEXT:    or %s0, 16, (0)1
+; CHECK-NEXT:    lea %s2, -16(, %s9)
+; CHECK-NEXT:    or %s3, 5, (0)1
+; CHECK-NEXT:    or %s1, 0, %s4
+; CHECK-NEXT:    bsic %s10, (, %s12)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = alloca i128, align 16
+  %4 = bitcast i128* %3 to i8*
+  call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %4)
+  store i128 %1, i128* %3, align 16, !tbaa !2
+  %5 = bitcast %"struct.std::__1::atomic.40"* %0 to i8*
+  call void @__atomic_store(i64 16, i8* nonnull %5, i8* nonnull %4, i32 signext 5)
+  call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %4)
+  ret void
+}
+
+; Function Attrs: nounwind
+define void @_Z25atomic_store_seq_cst_u128RNSt3__16atomicIoEEo(%"struct.std::__1::atomic.45"* nonnull align 16 dereferenceable(16) %0, i128 %1) {
+; CHECK-LABEL: _Z25atomic_store_seq_cst_u128RNSt3__16atomicIoEEo:
+; CHECK:       .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    or %s4, 0, %s0
+; CHECK-NEXT:    st %s2, -8(, %s9)
+; CHECK-NEXT:    st %s1, -16(, %s9)
+; CHECK-NEXT:    lea %s0, __atomic_store@lo
+; CHECK-NEXT:    and %s0, %s0, (32)0
+; CHECK-NEXT:    lea.sl %s12, __atomic_store@hi(, %s0)
+; CHECK-NEXT:    or %s0, 16, (0)1
+; CHECK-NEXT:    lea %s2, -16(, %s9)
+; CHECK-NEXT:    or %s3, 5, (0)1
+; CHECK-NEXT:    or %s1, 0, %s4
+; CHECK-NEXT:    bsic %s10, (, %s12)
+; CHECK-NEXT:    or %s11, 0, %s9
+  %3 = alloca i128, align 16
+  %4 = bitcast i128* %3 to i8*
+  call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %4)
+  store i128 %1, i128* %3, align 16, !tbaa !2
+  %5 = bitcast %"struct.std::__1::atomic.45"* %0 to i8*
+  call void @__atomic_store(i64 16, i8* nonnull %5, i8* nonnull %4, i32 signext 5)
+  call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %4)
+  ret void
+}
+
+; Function Attrs: nofree nounwind willreturn
+declare void @__atomic_store(i64, i8*, i8*, i32)
+
+; Function Attrs: argmemonly nounwind willreturn
+declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
+
+; Function Attrs: argmemonly nounwind willreturn
+declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
+
+!2 = !{!3, !3, i64 0}
+!3 = !{!"__int128", !4, i64 0}
+!4 = !{!"omnipotent char", !5, i64 0}
+!5 = !{!"Simple C++ TBAA"}