diff options
Diffstat (limited to 'lib/Target/README.txt')
| -rw-r--r-- | lib/Target/README.txt | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt index d6a9ea9fdb..a6e05fadef 100644 --- a/lib/Target/README.txt +++ b/lib/Target/README.txt @@ -756,36 +756,6 @@ be done safely if "b" isn't modified between the strlen and memcpy of course. //===---------------------------------------------------------------------===// -We generate a horrible libcall for llvm.powi. For example, we compile: - -#include <cmath> -double f(double a) { return std::pow(a, 4); } - -into: - -__Z1fd: - subl $12, %esp - movsd 16(%esp), %xmm0 - movsd %xmm0, (%esp) - movl $4, 8(%esp) - call L___powidf2$stub - addl $12, %esp - ret - -GCC produces: - -__Z1fd: - subl $12, %esp - movsd 16(%esp), %xmm0 - mulsd %xmm0, %xmm0 - mulsd %xmm0, %xmm0 - movsd %xmm0, (%esp) - fldl (%esp) - addl $12, %esp - ret - -//===---------------------------------------------------------------------===// - We compile this program: (from GCC PR11680) http://gcc.gnu.org/bugzilla/attachment.cgi?id=4487 |