diff --git a/llvm/include/llvm/Config/llvm-config.h.cmake b/llvm/include/llvm/Config/llvm-config.h.cmake
index e3e35e1b6e35a4..1c300cd7340b63 100644
--- a/llvm/include/llvm/Config/llvm-config.h.cmake
+++ b/llvm/include/llvm/Config/llvm-config.h.cmake
@@ -16,7 +16,7 @@
 
 /* Indicate that this is LLVM compiled from the amd-gfx branch. */
 #define LLVM_HAVE_BRANCH_AMD_GFX
-#define LLVM_MAIN_REVISION 509532
+#define LLVM_MAIN_REVISION 509536
 
 /* Define if LLVM_ENABLE_DUMP is enabled */
 #cmakedefine LLVM_ENABLE_DUMP
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp
index 81c4d4ec5be412..26d9304cb73672 100644
--- a/llvm/lib/Analysis/ConstantFolding.cpp
+++ b/llvm/lib/Analysis/ConstantFolding.cpp
@@ -2140,7 +2140,7 @@ static Constant *ConstantFoldScalarCall1(StringRef Name,
         return GetConstantFoldFPValue128(Result, Ty);
       }
       LibFunc Fp128Func = NotLibFunc;
-      if (TLI->getLibFunc(Name, Fp128Func) && TLI->has(Fp128Func) &&
+      if (TLI && TLI->getLibFunc(Name, Fp128Func) && TLI->has(Fp128Func) &&
           Fp128Func == LibFunc_logl)
         return ConstantFoldFP128(logf128, Op->getValueAPF(), Ty);
     }
diff --git a/llvm/lib/Analysis/LazyValueInfo.cpp b/llvm/lib/Analysis/LazyValueInfo.cpp
index 47d3dac73083ee..615d8b7ccd8ccf 100644
--- a/llvm/lib/Analysis/LazyValueInfo.cpp
+++ b/llvm/lib/Analysis/LazyValueInfo.cpp
@@ -512,8 +512,8 @@ class LazyValueInfoImpl {
 } // namespace llvm
 
 void LazyValueInfoImpl::solve() {
-  SmallVector<std::pair<BasicBlock *, Value *>, 8> StartingStack(
-      BlockValueStack.begin(), BlockValueStack.end());
+  SmallVector<std::pair<BasicBlock *, Value *>, 8> StartingStack =
+      BlockValueStack;
 
   unsigned processedCount = 0;
   while (!BlockValueStack.empty()) {
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index b12121d4688c65..6fd89ef76f9aae 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -7239,11 +7239,12 @@ InstructionCost LoopVectorizationPlanner::cost(VPlan &Plan,
   return Cost;
 }
 
+#ifndef NDEBUG
 /// Return true if the original loop \ TheLoop contains any instructions that do
 /// not have corresponding recipes in \p Plan and are not marked to be ignored
 /// in \p CostCtx. This means the VPlan contains simplification that the legacy
 /// cost-model did not account for.
-[[maybe_unused]] static bool
+static bool
 planContainsAdditionalSimplifications(VPlan &Plan, ElementCount VF,
                                       VPCostContext &CostCtx, Loop *TheLoop,
                                       LoopVectorizationCostModel &CM) {
@@ -7288,6 +7289,7 @@ planContainsAdditionalSimplifications(VPlan &Plan, ElementCount VF,
         });
       });
 }
+#endif
 
 VectorizationFactor LoopVectorizationPlanner::computeBestVF() {
   if (VPlans.empty())
diff --git a/llvm/test/Transforms/Inline/simplify-fp128.ll b/llvm/test/Transforms/Inline/simplify-fp128.ll
new file mode 100644
index 00000000000000..73e63702cefcba
--- /dev/null
+++ b/llvm/test/Transforms/Inline/simplify-fp128.ll
@@ -0,0 +1,24 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt < %s -passes=inline -S | FileCheck %s
+
+define void @fli() {
+; CHECK-LABEL: define void @fli() {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[TMP0:%.*]] = call fp128 @llvm.floor.f128(fp128 0xL999999999999999A4001199999999999)
+; CHECK-NEXT:    ret void
+;
+entry:
+  call void @sc()
+  ret void
+}
+
+define void @sc() {
+; CHECK-LABEL: define void @sc() {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[TMP0:%.*]] = tail call fp128 @llvm.floor.f128(fp128 0xL999999999999999A4001199999999999)
+; CHECK-NEXT:    ret void
+;
+entry:
+  %0 = tail call fp128 @llvm.floor.f128(fp128 0xL999999999999999A4001199999999999)
+  ret void
+}
diff --git a/llvm/utils/lit/lit/TestRunner.py b/llvm/utils/lit/lit/TestRunner.py
index 2d9af9fbbb3634..4dad1412436d93 100644
--- a/llvm/utils/lit/lit/TestRunner.py
+++ b/llvm/utils/lit/lit/TestRunner.py
@@ -1226,6 +1226,16 @@ def executeScript(test, litConfig, tmpBase, commands, cwd):
                     commands[i] += f" && {{ {command}; }}"
         if test.config.pipefail:
             f.write(b"set -o pipefail;" if mode == "wb" else "set -o pipefail;")
+
+        # Manually export any DYLD_* variables used by dyld on macOS because
+        # otherwise they are lost when the shell executable is run, before the
+        # lit test is executed.
+        env_str = "\n".join(
+            "export {}={};".format(k, shlex.quote(v))
+            for k, v in test.config.environment.items()
+            if k.startswith("DYLD_")
+        )
+        f.write(bytes(env_str, "utf-8") if mode == "wb" else env_str)
         f.write(b"set -x;" if mode == "wb" else "set -x;")
         if sys.version_info > (3, 0) and mode == "wb":
             f.write(bytes("{ " + "; } &&\n{ ".join(commands) + "; }", "utf-8"))