[llvm-commits] [llvm] r119920 - /llvm/trunk/lib/Target/README.txt

[Benjamin Kramer]

On 21.11.2010, at 07:10, Chris Lattner wrote:

> Author: lattner
> Date: Sun Nov 21 00:10:27 2010
> New Revision: 119920
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=119920&view=rev
> Log:
> tail calls on x86 are implemented.
> 
> Modified:
>    llvm/trunk/lib/Target/README.txt
> 
> Modified: llvm/trunk/lib/Target/README.txt
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/README.txt?rev=119920&r1=119919&r2=119920&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/README.txt (original)
> +++ llvm/trunk/lib/Target/README.txt Sun Nov 21 00:10:27 2010
> @@ -1535,22 +1535,6 @@
> 
> //===---------------------------------------------------------------------===//
> 
> -#include <math.h>
> -double foo(double a) {    return sin(a); }
> -
> -This compiles into this on x86-64 Linux:
> -foo:
> -	subq	$8, %rsp
> -	call	sin
> -	addq	$8, %rsp
> -	ret
> -vs:
> -
> -foo:
> -        jmp sin
> -

clang and llvm-gcc -O3 still generate a call instruction when compiling that C code.