IT 討論區（51）會員 曲莖通優 請你下次記得開PO

#include <algorithm>

int f(int x, int y) {
  return x > y ? x : y;
}

int g(int x, int y) {
  return std::max(x, y);
}

sh-3.2$ clang++ -O2 -S foo.cc

	.section	__TEXT,__text,regular,pure_instructions
	.build_version macos, 10, 14
	.globl	__Z1fii                 ## -- Begin function _Z1fii
	.p2align	4, 0x90
__Z1fii:                                ## @_Z1fii
	.cfi_startproc
## %bb.0:
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset %rbp, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register %rbp
	cmpl	%esi, %edi
	cmovgel	%edi, %esi
	movl	%esi, %eax
	popq	%rbp
	retq
	.cfi_endproc
                                        ## -- End function
	.globl	__Z1gii                 ## -- Begin function _Z1gii
	.p2align	4, 0x90
__Z1gii:                                ## @_Z1gii
	.cfi_startproc
## %bb.0:
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset %rbp, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register %rbp
	cmpl	%esi, %edi
	cmovll	%esi, %edi
	movl	%edi, %eax
	popq	%rbp
	retq
	.cfi_endproc
                                        ## -- End function

.subsections_via_symbols