[NFC][X86] Inclusive language: Rename master label in x86-shrink-wrapping.ll

[quinnp]

Summary

[NFC] As part of using inclusive language within the llvm project, this patch
renames the master label in x86-shrink-wrapping.ll to main.

[ZarkoCA]

Thanks LGTM.

llvm/test/CodeGen/X86/x86-shrink-wrapping.ll

 ; the prologue and epilogue just around the call to doSomething.
 ; PR25820.
 define i32 @tlsCall(i1 %bool1, i32 %arg, i32* readonly dereferenceable(4) %sum1) #3 {
 ; ENABLE-LABEL: tlsCall:
 ; ENABLE:       ## %bb.0: ## %entry
 ; ENABLE-NEXT:    pushq %rax
 ; ENABLE-NEXT:    testb $1, %dil
 ; ENABLE-NEXT:    je LBB15_2
-; ENABLE-NEXT:  ## %bb.1: ## %master
+; ENABLE-NEXT:  ## %bb.1: ## %main
 ; ENABLE-NEXT:    movl (%rdx), %ecx
 ; ENABLE-NEXT:    movq _sum1@TLVP(%rip), %rdi
 ; ENABLE-NEXT:    callq *(%rdi)
 ; ENABLE-NEXT:    movl %ecx, (%rax)
 ; ENABLE-NEXT:    jmp LBB15_3
 ; ENABLE-NEXT:  LBB15_2: ## %else
 ; ENABLE-NEXT:    xorl %edi, %edi
 ; ENABLE-NEXT:    xorl %esi, %esi
 ; ENABLE-NEXT:    callq _doSomething
 ; ENABLE-NEXT:    movl %eax, %esi
 ; ENABLE-NEXT:  LBB15_3: ## %exit
 ; ENABLE-NEXT:    movl %esi, %eax
 ; ENABLE-NEXT:    popq %rcx
 ; ENABLE-NEXT:    retq
 ;
 ; DISABLE-LABEL: tlsCall:
 ; DISABLE:       ## %bb.0: ## %entry
 ; DISABLE-NEXT:    pushq %rax
 ; DISABLE-NEXT:    testb $1, %dil
 ; DISABLE-NEXT:    je LBB15_2
-; DISABLE-NEXT:  ## %bb.1: ## %master
+; DISABLE-NEXT:  ## %bb.1: ## %main
 ; DISABLE-NEXT:    movl (%rdx), %ecx
 ; DISABLE-NEXT:    movq _sum1@TLVP(%rip), %rdi
 ; DISABLE-NEXT:    callq *(%rdi)
 ; DISABLE-NEXT:    movl %ecx, (%rax)
 ; DISABLE-NEXT:    jmp LBB15_3
 ; DISABLE-NEXT:  LBB15_2: ## %else
 ; DISABLE-NEXT:    xorl %edi, %edi
 ; DISABLE-NEXT:    xorl %esi, %esi
 ; DISABLE-NEXT:    callq _doSomething
 ; DISABLE-NEXT:    movl %eax, %esi
 ; DISABLE-NEXT:  LBB15_3: ## %exit
 ; DISABLE-NEXT:    movl %esi, %eax
 ; DISABLE-NEXT:    popq %rcx
 ; DISABLE-NEXT:    retq
 entry:
-  br i1 %bool1, label %master, label %else
+  br i1 %bool1, label %main, label %else
 
-master:
+main:
   %tmp1 = load i32, i32* %sum1, align 4
   store i32 %tmp1, i32* @sum1, align 4
   br label %exit
 
 else:
   %call = call i32 @doSomething(i32 0, i32* null)
   br label %exit
 
 exit:
-  %res = phi i32 [ %arg, %master], [ %call, %else ]
+  %res = phi i32 [ %arg, %main], [ %call, %else ]
   ret i32 %res
 }
 
 attributes #3 = { nounwind }
 
 @irreducibleCFGa = common global i32 0, align 4
 @irreducibleCFGf = common global i8 0, align 1
 @irreducibleCFGb = common global i32 0, align 4