diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -8339,9 +8339,6 @@
         return;
       }
 
-      if (DetectWriteToReservedRegister())
-        return;
-
       SDLoc dl = getCurSDLoc();
 
       OpInfo.AssignedRegs.getCopyToRegs(InOperandVal, DAG, dl, Chain, &Flag,
diff --git a/llvm/test/CodeGen/ARM/inline-asm-reserved-registers.ll b/llvm/test/CodeGen/ARM/inline-asm-reserved-registers.ll
--- a/llvm/test/CodeGen/ARM/inline-asm-reserved-registers.ll
+++ b/llvm/test/CodeGen/ARM/inline-asm-reserved-registers.ll
@@ -7,13 +7,6 @@
   ret void
 }
 
-; CHECK-ERROR: error: write to reserved register 'R7'
-define void @test_framepointer_input(i32 %input) {
-entry:
-  %0 = call i32 asm sideeffect "mov $0, $1", "=r,{r7}"(i32 %input)
-  ret void
-}
-
 ; CHECK-ERROR: error: write to reserved register 'PC'
 define void @test_pc_output(i32 %input) {
 entry:
@@ -21,13 +14,6 @@
   ret void
 }
 
-; CHECK-ERROR: error: write to reserved register 'PC'
-define void @test_pc_input(i32 %input) {
-entry:
-  %0 = call i32 asm sideeffect "mov $0, $1", "=r,{pc}"(i32 %input)
-  ret void
-}
-
 ; CHECK-ERROR: error: write to reserved register 'R6'
 define void @test_basepointer_output(i32 %size, i32 %input) alignstack(8) {
 entry:
@@ -35,11 +21,3 @@
   %0 = call i32 asm sideeffect "mov $0, $1", "={r6},r"(i32 %input)
   ret void
 }
-
-; CHECK-ERROR: error: write to reserved register 'R6'
-define void @test_basepointer_input(i32 %size, i32 %input) alignstack(8) {
-entry:
-  %vla = alloca i32, i32 %size, align 4
-  %0 = call i32 asm sideeffect "mov $0, $1", "=r,{r6}"(i32 %input)
-  ret void
-}