diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -8948,6 +8948,10 @@
   if (SDValue MULH = combineShiftToMULH(N, DAG, TLI))
     return MULH;
 
+  // Attempt to convert a sra of a load into a narrower sign-extending load.
+  if (SDValue NarrowLoad = ReduceLoadWidth(N))
+    return NarrowLoad;
+
   return SDValue();
 }
 
@@ -12120,6 +12124,28 @@
   if (Opc == ISD::SIGN_EXTEND_INREG) {
     ExtType = ISD::SEXTLOAD;
     ExtVT = cast<VTSDNode>(N->getOperand(1))->getVT();
+  } else if (Opc == ISD::SRA) {
+    // Another special-case: SRA is basically sign-extending a narrower value,
+    // or it may be shifting a higher subword, half or byte into the lowest
+    // bits.
+    SDValue N1 = N->getOperand(1);
+    // Only handle shift with constant shift amount, and the shiftee must be a
+    // non-zextload load.
+    auto *LN0 = dyn_cast<LoadSDNode>(N0);
+    auto *N1C = dyn_cast<ConstantSDNode>(N1);
+    if (!N1C || !LN0)
+      return SDValue();
+    if (LN0->getExtensionType() == ISD::ZEXTLOAD)
+      return SDValue();
+    // If the shift amount is larger than the memory type then we're not
+    // accessing any of the loaded bytes.
+    ShAmt = N1C->getZExtValue();
+    uint64_t MemoryWidth = LN0->getMemoryVT().getScalarSizeInBits();
+    if (MemoryWidth <= ShAmt)
+      return SDValue();
+    // Attempt to fold away the SRA by using SEXTLOAD.
+    ExtType = ISD::SEXTLOAD;
+    ExtVT = EVT::getIntegerVT(*DAG.getContext(), MemoryWidth - ShAmt);
   } else if (Opc == ISD::SRL) {
     // Another special-case: SRL is basically zero-extending a narrower value,
     // or it maybe shifting a higher subword, half or byte into the lowest
@@ -12161,6 +12187,8 @@
     ExtVT = EVT::getIntegerVT(*DAG.getContext(), ActiveBits);
   }
 
+  // FIXME: Investigate/describe why we limit this to hasOneUse (it seems a bit
+  // limiting for the case when N==N0, i.e. when being called from visitSRL).
   if (N0.getOpcode() == ISD::SRL && N0.hasOneUse()) {
     SDValue SRL = N0;
     if (auto *ConstShift = dyn_cast<ConstantSDNode>(SRL.getOperand(1))) {
diff --git a/llvm/test/CodeGen/PowerPC/pr13891.ll b/llvm/test/CodeGen/PowerPC/pr13891.ll
--- a/llvm/test/CodeGen/PowerPC/pr13891.ll
+++ b/llvm/test/CodeGen/PowerPC/pr13891.ll
@@ -7,7 +7,7 @@
 define void @_Z5check3foos(%struct.foo* nocapture byval(%struct.foo) %f, i16 signext %i) noinline {
 ; CHECK-LABEL: _Z5check3foos:
 ; CHECK: sth 3, {{[0-9]+}}(1)
-; CHECK: lha {{[0-9]+}}, {{[0-9]+}}(1)
+; CHECK: lbz {{[0-9]+}}, {{[0-9]+}}(1)
 entry:
   %0 = bitcast %struct.foo* %f to i16*
   %1 = load i16, i16* %0, align 2
diff --git a/llvm/test/CodeGen/X86/combine-sra-load.ll b/llvm/test/CodeGen/X86/combine-sra-load.ll
--- a/llvm/test/CodeGen/X86/combine-sra-load.ll
+++ b/llvm/test/CodeGen/X86/combine-sra-load.ll
@@ -1,12 +1,11 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=CHECK
 
-; FIXME: fold (sra (load i32), 16)) -> (sextload i16)
+; fold (sra (load i32), 16)) -> (sextload i16)
 define i32 @sra_half(i32* %p) {
 ; CHECK-LABEL: sra_half:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    movl (%rdi), %eax
-; CHECK-NEXT:    sarl $16, %eax
+; CHECK-NEXT:    movswl 2(%rdi), %eax
 ; CHECK-NEXT:    retq
   %load = load i32, i32* %p
   %shift = ashr i32 %load, 16
@@ -25,12 +24,11 @@
   ret <4 x i32> %shift
 }
 
-; FIXME: fold (sra (load i64), 48)) -> (sextload i16)
+; fold (sra (load i64), 48)) -> (sextload i16)
 define i64 @sra_large_shift(i64* %r) {
 ; CHECK-LABEL: sra_large_shift:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    movq (%rdi), %rax
-; CHECK-NEXT:    sarq $48, %rax
+; CHECK-NEXT:    movswq 6(%rdi), %rax
 ; CHECK-NEXT:    retq
   %t0 = load i64, i64* %r
   %conv = ashr i64 %t0, 48
@@ -61,12 +59,11 @@
   ret i32 %shift
 }
 
-; FIXME: fold (sra (sextload i16 to i32), 8) -> (sextload i8)
+; fold (sra (sextload i16 to i32), 8) -> (sextload i8)
 define i32 @sra_of_sextload(i16* %p) {
 ; CHECK-LABEL: sra_of_sextload:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    movswl (%rdi), %eax
-; CHECK-NEXT:    sarl $8, %eax
+; CHECK-NEXT:    movsbl 1(%rdi), %eax
 ; CHECK-NEXT:    retq
   %load = load i16, i16* %p
   %sext = sext i16 %load to i32
@@ -88,12 +85,11 @@
   ret i32 %shift
 }
 
-; FIXME: Fold even if SRA has multiple uses.
+; Fold even if SRA has multiple uses.
 define i32 @sra_to_sextload_multiple_sra_uses(i32* %p) {
 ; CHECK-LABEL: sra_to_sextload_multiple_sra_uses:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    movl (%rdi), %ecx
-; CHECK-NEXT:    sarl $16, %ecx
+; CHECK-NEXT:    movswl 2(%rdi), %ecx
 ; CHECK-NEXT:    movl %ecx, %eax
 ; CHECK-NEXT:    xorl $6, %eax
 ; CHECK-NEXT:    orl %ecx, %eax