[llvm] [ARM] Fix -mno-omit-leaf-frame-pointer flag doesn't works on 32-bit ARM (PR #109628)

[via llvm-commits]

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@@ -40,6 +40,20 @@ bool TargetOptions::DisableFramePointerElim(const MachineFunction &MF) const {
   llvm_unreachable("unknown frame pointer flag");
 }
 
+/// DisableLeafFramePointerElim - This returns true if leaf frame pointer
+/// elimination optimization should be disabled for the given machine function.
+bool TargetOptions::DisableLeafFramePointerElim(
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guoxin049 wrote:

like this,  
```_t1:
@ %bb.0:
	push	{r7, lr}
	mov	r7, sp
	movw	r0, :lower16:_message1
	movt	r0, :upper16:_message1
	add	r0, r0, #5
	movw	r1, #64
	movw	r2, #10
	and	r1, r1, #255
	bl	_memset
	pop	{r7, pc}
                                        @ -- End function
	.globl	_t2                             @ -- Begin function t2
	.p2align	2
	.code	32                              @ @t2
```
Because this judgment is at the front
https://github.com/llvm/llvm-project/blob/22829f757dc76b23071d9438ae9c6ddc3e966db0/llvm/lib/CodeGen/TargetOptionsImpl.cpp#L24-L31

https://github.com/llvm/llvm-project/pull/109628