llvm opt-始终在线传递不';t内联
我在(人类可读的)LLVM位代码文件Input.ll中有以下SyS_sendto函数定义:llvm opt-始终在线传递不';t内联,llvm,inline,Llvm,Inline,我在(人类可读的)LLVM位代码文件Input.ll中有以下SyS_sendto函数定义: ; Function Attrs: alwaysinline noredzone nounwind define i64 @SyS_sendto( i64 %fd, i64 %buff, i64 %len, i64 %flags, i64 %addr, i64 %addr_len) #0 { 在这个文件的末尾,attributes#0包含单词alwaysinline: attributes #0 = {
; Function Attrs: alwaysinline noredzone nounwind
define i64 @SyS_sendto(
i64 %fd, i64 %buff, i64 %len, i64 %flags, i64 %addr, i64 %addr_len) #0 {
在这个文件的末尾,attributes#0包含单词alwaysinline:
attributes #0 = { alwaysinline noredzone nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
; Function Attrs: noredzone nounwind
define i64 @GO(i64 %fd, i64 %buff, i64 %len, i64 %flags) #0 {
%1 = trunc i64 %fd to i32
%2 = inttoptr i64 %buff to i8*
%3 = trunc i64 %flags to i32
%4 = tail call i64 bitcast
(i64 (i64, i64, i64, i64, i64, i64)*
@SyS_sendto to i64
(i32, i8*, i64, i32, %struct.sockaddr*, i32)*)
(i32 %1,
i8* %2,
i64 %len,
i32 %3,
%struct.sockaddr* null,
i32 0) #0
ret i64 %4
}
在Input.ll的某个地方,有一个对SyS_sendto的调用,应该是内联的
在选择过程中-始终在线:
attributes #0 = { alwaysinline noredzone nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
; Function Attrs: noredzone nounwind
define i64 @GO(i64 %fd, i64 %buff, i64 %len, i64 %flags) #0 {
%1 = trunc i64 %fd to i32
%2 = inttoptr i64 %buff to i8*
%3 = trunc i64 %flags to i32
%4 = tail call i64 bitcast
(i64 (i64, i64, i64, i64, i64, i64)*
@SyS_sendto to i64
(i32, i8*, i64, i32, %struct.sockaddr*, i32)*)
(i32 %1,
i8* %2,
i64 %len,
i32 %3,
%struct.sockaddr* null,
i32 0) #0
ret i64 %4
}
我运行:
llvm-as -o=Input.bc Input.ll
opt -always-inline Input.bc -o InlinedInput.bc
llvm-dis -o=InlinedInput.ll InlinedInput.bc
但是GO没有改变,我也看到了InputInlined.ll中对SyS_sendto的调用。。。它是而不是内联的:
; Function Attrs: noredzone nounwind
define i64 @GO(i64 %fd, i64 %buff, i64 %len, i64 %flags) #0 {
%1 = trunc i64 %fd to i32
%2 = inttoptr i64 %buff to i8*
%3 = trunc i64 %flags to i32
%4 = tail call i64 bitcast
(i64 (i64, i64, i64, i64, i64, i64)*
@SyS_sendto to i64
(i32, i8*, i64, i32, %struct.sockaddr*, i32)*)
(i32 %1,
i8* %2,
i64 %len,
i32 %3,
%struct.sockaddr* null,
i32 0) #0
ret i64 %4
}
非常感谢您的帮助!谢谢 在您的示例中,对
@SyS\u sendto
的调用是一个间接调用的实例(由于比特广播
表达式),LLVM当前正在内联这些调用
您可以遵循(2015)或签入。在您的示例中,对
@SyS\u sendto
的调用是间接调用的一个实例(由于比特广播
表达式),LLVM当前正在内联这些调用
您可以关注(2015)或登记入住