diff --git a/llvm/lib/CodeGen/StackColoring.cpp b/llvm/lib/CodeGen/StackColoring.cpp
--- a/llvm/lib/CodeGen/StackColoring.cpp
+++ b/llvm/lib/CodeGen/StackColoring.cpp
@@ -651,6 +651,7 @@
     }
 
     // Walk the instructions in the block to look for start/end ops.
+    bool FirstLoad = true;
     for (MachineInstr &MI : *MBB) {
       if (MI.getOpcode() == TargetOpcode::LIFETIME_START ||
           MI.getOpcode() == TargetOpcode::LIFETIME_END) {
@@ -687,6 +688,14 @@
           if (! BetweenStartEnd.test(Slot)) {
             ConservativeSlots.set(Slot);
           }
+          // For variable X in catch(X), we put &&X into ConservativeSlots
+          // to prevent using LifetimeStartOnFirstUse. Because &&X may merged
+          // with class object which may call destructor after write &&X. The
+          // loader of &&X is the first LOAD MI in EHPad.
+          if (MBB->isEHPad() && MI.mayLoad() && FirstLoad) {
+            FirstLoad = false;
+            ConservativeSlots.set(Slot);
+          }
         }
       }
     }
diff --git a/llvm/test/CodeGen/X86/StackColoring-first-use-in-catch.mir b/llvm/test/CodeGen/X86/StackColoring-first-use-in-catch.mir
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/X86/StackColoring-first-use-in-catch.mir
@@ -0,0 +1,339 @@
+# RUN: llc -mtriple="i386-pc-windows-msvc" -run-pass=stack-coloring %s -o - | FileCheck %s
+
+## try{
+## T2 ex2;
+## ...
+## call func_bar;
+## ...
+## }catch (T1 ex){
+## ...
+## }
+## The Exception Handle lib may write the catch value and return the point (T1**)
+## back, Here ex2's destructor may do some work after writing &&ex (T1**), it
+## may overwite the &&ex's value.
+## This test tests is preventing merging stack.1.ex2 and %stack.2.ex successful
+## or not (stack.2.ex is the &&ex)
+
+## If only ex or ex2 in stack list, it is failed to prevent merging.
+# CHECK: stack:
+# CHECK: id: 1, name: ex2, type: default, offset: 0, size: 4, alignment: 4,
+# CHECK: id: 2, name: ex, type: default, offset: 0, size: 4, alignment: 4,
+
+## And if fail to prevent merging, the CHECK at line 33 will be somelike
+## "%7:gr32 = MOV32rm %stack.1.ex2 ..."
+# CHECK: bb.0.entry:
+# CHECK:   %6:gr32 = LEA32r %stack.1.ex2, 1, $noreg, 0, $noreg
+# CHECK:   MOV32mr %5, 1, $noreg, 0, $noreg, killed %6 :: (store 4 into stack)
+# CHECK:   CALLpcrel32 @"?bar@@YAXAAVcb@@@Z"
+# CHECK:   JMP_1 %bb.1
+# CHECK: bb.1.invoke.cont1:
+# CHECK:   %8:gr32 = MOV32r0 implicit-def dead $eflags
+# CHECK:   JMP_1 %bb.4
+# CHECK: bb.2.catch (landing-pad, ehfunclet-entry):
+# CHECK:   %7:gr32 = MOV32rm %stack.2.ex, 1, $noreg, 0, $noreg :: (dereferenceable load 4 from %ir.ex, !tbaa !14)
+# CHECK:   %0:gr32 = MOV32rm killed %7, 1, $noreg, 0, $noreg :: (load 4 from %ir.member2)
+# CHECK:   CATCHRET %bb.3, %bb.0
+# CHECK: bb.3.catch (landing-pad):
+# CHECK:   JMP_4 %bb.4
+# CHECK: bb.4.try.cont:
+
+--- |
+  ; ModuleID = 'ts.ll'
+  source_filename = "ts.cpp"
+  target datalayout = "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:32-n8:16:32-a:0:32-S32"
+  target triple = "i386-pc-windows-msvc"
+
+  %rtti.TypeDescriptor8 = type { i8**, i8*, [9 x i8] }
+  %CXXExceptionRegistration = type { i8*, %EHRegistrationNode, i32 }
+  %EHRegistrationNode = type { %EHRegistrationNode*, i8* }
+  %class.cb = type { i32 }
+
+  $"??_R0?AVcb@@@8" = comdat any
+
+  @"??_7type_info@@6B@" = external constant i8*
+  @"??_R0?AVcb@@@8" = linkonce_odr global %rtti.TypeDescriptor8 { i8** @"??_7type_info@@6B@", i8* null, [9 x i8] c".?AVcb@@\00" }, comdat
+
+  define dso_local i32 @"?run@@YAHXZ"() local_unnamed_addr #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
+  entry:
+    %0 = alloca %CXXExceptionRegistration, align 4
+    %1 = bitcast %CXXExceptionRegistration* %0 to i8*
+    call void @llvm.x86.seh.ehregnode(i8* %1)
+    %2 = call i8* @llvm.stacksave()
+    %3 = getelementptr inbounds %CXXExceptionRegistration, %CXXExceptionRegistration* %0, i32 0, i32 0
+    store i8* %2, i8** %3, align 4
+    %4 = getelementptr inbounds %CXXExceptionRegistration, %CXXExceptionRegistration* %0, i32 0, i32 2
+    store i32 -1, i32* %4, align 4
+    %5 = getelementptr inbounds %CXXExceptionRegistration, %CXXExceptionRegistration* %0, i32 0, i32 1
+    %6 = getelementptr inbounds %EHRegistrationNode, %EHRegistrationNode* %5, i32 0, i32 1
+    store i8* bitcast (i32 (i8*, i8*, i8*, i8*)* @"__ehhandler$?run@@YAHXZ" to i8*), i8** %6, align 4
+    %7 = load %EHRegistrationNode*, %EHRegistrationNode* addrspace(257)* null, align 4
+    %8 = getelementptr inbounds %EHRegistrationNode, %EHRegistrationNode* %5, i32 0, i32 0
+    store %EHRegistrationNode* %7, %EHRegistrationNode** %8, align 4
+    store %EHRegistrationNode* %5, %EHRegistrationNode* addrspace(257)* null, align 4
+    %zx = alloca %class.cb, align 4
+    %ex2 = alloca %class.cb, align 4
+    %ex = alloca %class.cb*, align 4
+    %9 = bitcast %class.cb* %ex2 to i8*
+    call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %9) #4
+    %member.i1 = bitcast %class.cb* %ex2 to i32*
+    store i32 2, i32* %member.i1, align 4, !tbaa !9
+    %10 = getelementptr inbounds %CXXExceptionRegistration, %CXXExceptionRegistration* %0, i32 0, i32 2
+    store i32 0, i32* %10, align 4
+    invoke void @"?bar@@YAXAAVcb@@@Z"(%class.cb* nonnull align 4 dereferenceable(4) %ex2)
+            to label %invoke.cont1 unwind label %catch.dispatch
+
+  invoke.cont1:                                     ; preds = %entry
+    %11 = bitcast %class.cb* %ex2 to i8*
+    call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %11) #4
+    br label %try.cont
+
+  catch.dispatch:                                   ; preds = %entry
+    %12 = catchswitch within none [label %catch] unwind to caller
+
+  catch:                                            ; preds = %catch.dispatch
+    %13 = catchpad within %12 [%rtti.TypeDescriptor8* @"??_R0?AVcb@@@8", i32 8, %class.cb** %ex]
+    %14 = load %class.cb*, %class.cb** %ex, align 4, !tbaa !14
+    %member2 = bitcast %class.cb* %14 to i32*
+    %15 = load i32, i32* %member2, align 4, !tbaa !9
+    catchret from %13 to label %try.cont
+
+  try.cont:                                         ; preds = %catch, %invoke.cont1
+    %x.0 = phi i32 [ 0, %invoke.cont1 ], [ %15, %catch ]
+    %16 = getelementptr inbounds %CXXExceptionRegistration, %CXXExceptionRegistration* %0, i32 0, i32 1
+    %17 = getelementptr inbounds %EHRegistrationNode, %EHRegistrationNode* %16, i32 0, i32 0
+    %18 = load %EHRegistrationNode*, %EHRegistrationNode** %17, align 4
+    store %EHRegistrationNode* %18, %EHRegistrationNode* addrspace(257)* null, align 4
+    ret i32 %x.0
+  }
+
+  ; Function Attrs: argmemonly nounwind willreturn
+  declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1
+
+  ; Function Attrs: nofree
+  declare dso_local i32 @__CxxFrameHandler3(...) #2
+
+  declare dso_local void @"?bar@@YAXAAVcb@@@Z"(%class.cb* nonnull align 4 dereferenceable(4)) local_unnamed_addr #3
+
+  ; Function Attrs: argmemonly nounwind willreturn
+  declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1
+
+  declare i32 @_setjmp3(i8*, i32, ...)
+
+  ; Function Attrs: nounwind
+  declare i8* @llvm.stacksave() #4
+
+  define internal i32 @"__ehhandler$?run@@YAHXZ"(i8* %0, i8* %1, i8* %2, i8* %3) #5 {
+  entry:
+    %4 = call i8* @llvm.x86.seh.lsda(i8* bitcast (i32 ()* @"?run@@YAHXZ" to i8*))
+    %5 = tail call i32 bitcast (i32 (...)* @__CxxFrameHandler3 to i32 (i8*, i8*, i8*, i8*, i8*)*)(i8* inreg %4, i8* %0, i8* %1, i8* %2, i8* %3)
+    ret i32 %5
+  }
+
+  ; Function Attrs: nounwind readnone
+  declare i8* @llvm.x86.seh.lsda(i8*) #6
+
+  declare x86_stdcallcc void @__CxxLongjmpUnwind(i8*)
+
+  ; Function Attrs: nounwind
+  declare void @llvm.x86.seh.ehregnode(i8*) #4
+
+  ; Function Attrs: nounwind
+  declare void @llvm.stackprotector(i8*, i8**) #4
+
+  attributes #0 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+  attributes #1 = { argmemonly nounwind willreturn }
+  attributes #2 = { nofree }
+  attributes #3 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+  attributes #4 = { nounwind }
+  attributes #5 = { "safeseh" }
+  attributes #6 = { nounwind readnone }
+
+  !llvm.linker.options = !{!0, !1, !2, !3, !4, !5}
+  !llvm.module.flags = !{!6, !7}
+  !llvm.ident = !{!8}
+
+  !0 = !{!"/DEFAULTLIB:libircmt.lib"}
+  !1 = !{!"/DEFAULTLIB:libmmd.lib"}
+  !2 = !{!"/DEFAULTLIB:msvcrt.lib"}
+  !3 = !{!"/DEFAULTLIB:oldnames.lib"}
+  !4 = !{!"/DEFAULTLIB:svml_dispmd.lib"}
+  !5 = !{!"/DEFAULTLIB:libdecimal.lib"}
+  !6 = !{i32 1, !"NumRegisterParameters", i32 0}
+  !7 = !{i32 1, !"wchar_size", i32 2}
+  !8 = !{!"Intel(R) oneAPI DPC++ Compiler 2021.1 (YYYY.x.0.MMDD)"}
+  !9 = !{!10, !11, i64 0}
+  !10 = !{!"struct@?AVcb@@", !11, i64 0}
+  !11 = !{!"int", !12, i64 0}
+  !12 = !{!"omnipotent char", !13, i64 0}
+  !13 = !{!"Simple C++ TBAA"}
+  !14 = !{!15, !15, i64 0}
+  !15 = !{!"any pointer", !12, i64 0}
+
+...
+---
+name:            '?run@@YAHXZ'
+alignment:       16
+exposesReturnsTwice: false
+legalized:       false
+regBankSelected: false
+selected:        false
+failedISel:      false
+tracksRegLiveness: true
+hasWinCFI:       false
+registers:
+  - { id: 0, class: gr32, preferred-register: '' }
+  - { id: 1, class: gr32, preferred-register: '' }
+  - { id: 2, class: gr32, preferred-register: '' }
+  - { id: 3, class: gr32, preferred-register: '' }
+  - { id: 4, class: gr32, preferred-register: '' }
+  - { id: 5, class: gr32, preferred-register: '' }
+  - { id: 6, class: gr32, preferred-register: '' }
+  - { id: 7, class: gr32, preferred-register: '' }
+  - { id: 8, class: gr32, preferred-register: '' }
+  - { id: 9, class: gr32, preferred-register: '' }
+liveins:         []
+frameInfo:
+  isFrameAddressTaken: false
+  isReturnAddressTaken: false
+  hasStackMap:     false
+  hasPatchPoint:   false
+  stackSize:       0
+  offsetAdjustment: 0
+  maxAlignment:    4
+  adjustsStack:    false
+  hasCalls:        true
+  stackProtector:  ''
+  maxCallFrameSize: 4294967295
+  cvBytesOfCalleeSavedRegisters: 0
+  hasOpaqueSPAdjustment: true
+  hasVAStart:      false
+  hasMustTailInVarArgFunc: false
+  localFrameSize:  0
+  savePoint:       ''
+  restorePoint:    ''
+fixedStack:      []
+stack:
+  - { id: 0, name: 'zx', type: default, offset: 0, size: 16,
+      alignment: 4, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
+      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+  - { id: 1, name: ex2, type: default, offset: 0, size: 4, alignment: 4,
+      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
+      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+  - { id: 2, name: ex, type: default, offset: 0, size: 4, alignment: 4,
+      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
+      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+callSites:       []
+constants:       []
+machineFunctionInfo: {}
+body:             |
+  bb.0.entry:
+    successors: %bb.1(0x7ffff800), %bb.2(0x00000800)
+
+    %2:gr32 = COPY $esp
+    MOV32mr %stack.0.zx, 1, $noreg, 0, $noreg, %2 :: (store 4 into %ir.3)
+    MOV32mi %stack.0.zx, 1, $noreg, 12, $noreg, -1 :: (store 4 into %ir.4)
+    %3:gr32 = nuw LEA32r %stack.0.zx, 1, $noreg, 4, $noreg
+    MOV32mi %stack.0.zx, 1, $noreg, 8, $noreg, @"__ehhandler$?run@@YAHXZ" :: (store 4 into %ir.6)
+    %4:gr32 = MOV32rm $noreg, 1, $noreg, 0, $fs :: (load 4 from `%EHRegistrationNode* addrspace(257)* null`, addrspace 257)
+    MOV32mr %stack.0.zx, 1, $noreg, 4, $noreg, killed %4 :: (store 4 into %ir.8)
+    MOV32mr $noreg, 1, $noreg, 0, $fs, killed %3 :: (store 4 into `%EHRegistrationNode* addrspace(257)* null`, addrspace 257)
+    LIFETIME_START %stack.2.ex
+    LIFETIME_START %stack.1.ex2
+    MOV32mi %stack.1.ex2, 1, $noreg, 0, $noreg, 2 :: (store 4 into %ir.member.i1, !tbaa !9)
+    MOV32mi %stack.0.zx, 1, $noreg, 12, $noreg, 0 :: (store 4 into %ir.10)
+    ADJCALLSTACKDOWN32 4, 0, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp
+    %5:gr32 = COPY $esp
+    %6:gr32 = LEA32r %stack.1.ex2, 1, $noreg, 0, $noreg
+    MOV32mr %5, 1, $noreg, 0, $noreg, killed %6 :: (store 4 into stack)
+    CALLpcrel32 @"?bar@@YAXAAVcb@@@Z", csr_noregs, implicit $esp, implicit $ssp, implicit-def $esp, implicit-def $ssp
+    ADJCALLSTACKUP32 4, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp
+    LIFETIME_END %stack.1.ex2
+    JMP_1 %bb.1
+
+  bb.1.invoke.cont1:
+    successors: %bb.3(0x80000000)
+
+    %8:gr32 = MOV32r0 implicit-def dead $eflags
+    JMP_1 %bb.3
+
+  bb.2.catch (landing-pad, ehfunclet-entry):
+    successors: %bb.4(0x80000000)
+
+    %7:gr32 = MOV32rm %stack.2.ex, 1, $noreg, 0, $noreg :: (dereferenceable load 4 from %ir.ex, !tbaa !14)
+    %0:gr32 = MOV32rm killed %7, 1, $noreg, 0, $noreg :: (load 4 from %ir.member2, !tbaa !9)
+    CATCHRET %bb.4, %bb.0
+
+  bb.4.catch (landing-pad):
+    successors: %bb.3(0x80000000)
+
+    JMP_4 %bb.3
+
+  bb.3.try.cont:
+    %1:gr32 = PHI %0, %bb.4, %8, %bb.1
+    %9:gr32 = MOV32rm %stack.0.zx, 1, $noreg, 4, $noreg :: (dereferenceable load 4 from %ir.17)
+    MOV32mr $noreg, 1, $noreg, 0, $fs, killed %9 :: (store 4 into `%EHRegistrationNode* addrspace(257)* null`, addrspace 257)
+    $eax = COPY %1
+    LIFETIME_END %stack.2.ex
+    RET 0, $eax
+
+...
+---
+name:            '__ehhandler$?run@@YAHXZ'
+alignment:       16
+exposesReturnsTwice: false
+legalized:       false
+regBankSelected: false
+selected:        false
+failedISel:      false
+tracksRegLiveness: true
+hasWinCFI:       false
+registers:
+  - { id: 0, class: gr32, preferred-register: '' }
+liveins:         []
+frameInfo:
+  isFrameAddressTaken: false
+  isReturnAddressTaken: false
+  hasStackMap:     false
+  hasPatchPoint:   false
+  stackSize:       0
+  offsetAdjustment: 0
+  maxAlignment:    4
+  adjustsStack:    false
+  hasCalls:        false
+  stackProtector:  ''
+  maxCallFrameSize: 4294967295
+  cvBytesOfCalleeSavedRegisters: 0
+  hasOpaqueSPAdjustment: false
+  hasVAStart:      false
+  hasMustTailInVarArgFunc: false
+  localFrameSize:  0
+  savePoint:       ''
+  restorePoint:    ''
+fixedStack:
+  - { id: 0, type: default, offset: 12, size: 4, alignment: 4, stack-id: default,
+      isImmutable: false, isAliased: false, callee-saved-register: '',
+      callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '',
+      debug-info-location: '' }
+  - { id: 1, type: default, offset: 8, size: 4, alignment: 4, stack-id: default,
+      isImmutable: false, isAliased: false, callee-saved-register: '',
+      callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '',
+      debug-info-location: '' }
+  - { id: 2, type: default, offset: 4, size: 4, alignment: 4, stack-id: default,
+      isImmutable: false, isAliased: false, callee-saved-register: '',
+      callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '',
+      debug-info-location: '' }
+  - { id: 3, type: default, offset: 0, size: 4, alignment: 4, stack-id: default,
+      isImmutable: false, isAliased: false, callee-saved-register: '',
+      callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '',
+      debug-info-location: '' }
+stack:           []
+callSites:       []
+constants:       []
+machineFunctionInfo: {}
+body:             |
+  bb.0.entry:
+    %0:gr32 = MOV32ri <mcsymbol L__ehtablerunYAHXZ>
+    $eax = COPY %0
+    TCRETURNdi @__CxxFrameHandler3, 0, csr_32, implicit $esp, implicit $ssp, implicit $eax
+
+...