diff --git a/llvm/lib/CodeGen/RegAllocFast.cpp b/llvm/lib/CodeGen/RegAllocFast.cpp
--- a/llvm/lib/CodeGen/RegAllocFast.cpp
+++ b/llvm/lib/CodeGen/RegAllocFast.cpp
@@ -1237,6 +1237,18 @@
       Register Reg = MO.getReg();
       if (!Reg)
         continue;
+      // Do not free later early-clobbered registers when MI is MSVCInlineAsm
+      if (MI.isMSInlineAsm()) {
+        unsigned J = 0;
+        for (J = I + 1; J != MI.getNumOperands(); ++J) {
+          MachineOperand &LaterMO = MI.getOperand(J);
+          if (LaterMO.isReg() && LaterMO.getReg() == Reg &&
+              MI.getOperand(J).isEarlyClobber())
+            break;
+        }
+        if (J != MI.getNumOperands())
+          continue;
+      }
       assert(Reg.isPhysical());
       if (MRI->isReserved(Reg))
         continue;
diff --git a/llvm/test/CodeGen/X86/corner-msInline-fastregalloc.ll b/llvm/test/CodeGen/X86/corner-msInline-fastregalloc.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/X86/corner-msInline-fastregalloc.ll
@@ -0,0 +1,15 @@
+; RUN: llc < %s -O0 -mtriple=i386-unknown-linux-gnu -mcpu=generic -regalloc=fast -optimize-regalloc=0 -no-x86-call-frame-opt | FileCheck %s
+
+define dso_local i32 @foo() {
+entry:
+; CHECK: movl $1, %eax
+; CHECK-NOT: movl %eax, (%eax)
+  %retval = alloca i32, align 4
+  %c = alloca { [4 x i32] }, align 4
+  store i32 0, i32* %retval, align 4
+  %m32 = bitcast { [4 x i32] }* %c to [4 x i32]*
+  %0 = call i32 asm sideeffect inteldialect "mov eax,$$1\0A\09mov $0,eax", "=*m,={eax},~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %m32) #1, !srcloc !3
+  store i32 %0, i32* %retval, align 4
+  ret i32 0
+}
+!3 = !{i32 285}
\ No newline at end of file
diff --git a/llvm/test/CodeGen/X86/corner-msInline-fastregalloc.mir b/llvm/test/CodeGen/X86/corner-msInline-fastregalloc.mir
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/X86/corner-msInline-fastregalloc.mir
@@ -0,0 +1,64 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=i386-unknown-linux-musl -verify-machineinstrs -run-pass=regallocfast -o -  %s | FileCheck %s
+
+# Make sure this case doesn't try to assign $eax to %5
+
+--- |
+  ; ModuleID = '<stdin>'
+  source_filename = "test.c"
+  target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+
+  define dso_local i32 @foo() {
+  entry:
+    %retval = alloca i32, align 4
+    %c = alloca { [4 x i32] }, align 4
+    store i32 0, i32* %retval, align 4
+    %m32 = bitcast { [4 x i32] }* %c to [4 x i32]*
+    %0 = call i32 asm sideeffect inteldialect "mov eax,$$1\0A\09mov $0,eax", "=*m,={eax},~{eax},~{dirflag},~{fpsr},~{flags}"([4 x i32]* %m32), !srcloc !0
+    store i32 %0, i32* %retval, align 4
+    ret i32 0
+  }
+
+  !0 = !{i32 285}
+
+...
+---
+name:            foo
+alignment:       16
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: gr32 }
+  - { id: 1, class: gr32 }
+  - { id: 2, class: gr64 }
+  - { id: 3, class: gr32 }
+  - { id: 4, class: gr64 }
+  - { id: 5, class: gr64 }
+frameInfo:
+  maxAlignment:    8
+stack:
+  - { id: 0, name: retval, size: 4, alignment: 4 }
+  - { id: 1, name: c, size: 16, alignment: 8 }
+machineFunctionInfo: {}
+body:             |
+  bb.0.entry:
+    ; CHECK-LABEL: name: foo
+    ; CHECK: MOV32mi %stack.0.retval, 1, $noreg, 0, $noreg, 0 :: (store 4 into %ir.retval)
+    ; CHECK: renamable $rcx = LEA64r %stack.1.c, 1, $noreg, 0, $noreg
+    ; CHECK: INLINEASM &"mov eax,$$1\0A\09mov $0,eax", 21 /* sideeffect maystore */, 196654 /* mem:m */, killed renamable $rcx, 1, $noreg, 0, $noreg, 10 /* regdef */, implicit-def $eax, 12 /* clobber */, implicit-def early-clobber $eax, 12 /* clobber */, implicit-def dead early-clobber $df, 12 /* clobber */, implicit-def early-clobber $fpsw, 12 /* clobber */, implicit-def dead early-clobber $eflags, !0
+    ; CHECK: renamable $ecx = COPY killed $eax
+    ; CHECK: renamable $eax = MOV32r0 implicit-def dead $eflags
+    ; CHECK: MOV32mr %stack.0.retval, 1, $noreg, 0, $noreg, killed renamable $ecx :: (store 4 into %ir.retval)
+    ; CHECK: RETQ implicit killed $eax
+    MOV32mi %stack.0.retval, 1, $noreg, 0, $noreg, 0 :: (store 4 into %ir.retval)
+    %4:gr64 = LEA64r %stack.1.c, 1, $noreg, 0, $noreg
+    %5:gr64 = COPY %4
+    INLINEASM &"mov eax,$$1\0A\09mov $0,eax", 21 /* sideeffect maystore */, 196654 /* mem:m */, %5, 1, $noreg, 0, $noreg, 10 /* regdef */, implicit-def $eax, 12 /* clobber */, implicit-def early-clobber $eax, 12 /* clobber */, implicit-def early-clobber $df, 12 /* clobber */, implicit-def early-clobber $fpsw, 12 /* clobber */, implicit-def early-clobber $eflags, !0
+    %3:gr32 = COPY $eax
+    %1:gr32 = COPY %3
+    %0:gr32 = MOV32r0 implicit-def $eflags
+    MOV32mr %stack.0.retval, 1, $noreg, 0, $noreg, killed %1 :: (store 4 into %ir.retval)
+    $eax = COPY %0
+    RETQ implicit $eax
+
+...
+