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| author | Chris Lattner <sabre@nondot.org> | 2006-05-19 19:41:33 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2006-05-19 19:41:33 +0000 |
| commit | de050a7509b906985c8ba9367956270211a389bd (patch) | |
| tree | 08f9af445809e4ce057bd53830ada1a6f0755284 /lib/Target | |
| parent | 82743daacff6fe9c62a43ecf7f42d2f0d973e0b5 (diff) | |
| download | llvm-de050a7509b906985c8ba9367956270211a389bd.tar.gz llvm-de050a7509b906985c8ba9367956270211a389bd.tar.bz2 llvm-de050a7509b906985c8ba9367956270211a389bd.tar.xz | |
Particularly ugly code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28397 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/X86/README.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt index 05dc535a7b..8e752e061e 100644 --- a/lib/Target/X86/README.txt +++ b/lib/Target/X86/README.txt @@ -36,6 +36,20 @@ http://gcc.gnu.org/ml/gcc-patches/2004-04/msg00659.html //===---------------------------------------------------------------------===// +On darwin/x86, we should codegen: + + ret double 0.000000e+00 + +as fld0/ret, not as: + + movl $0, 4(%esp) + movl $0, (%esp) + fldl (%esp) + ... + ret + +//===---------------------------------------------------------------------===// + This should use fiadd on chips where it is profitable: double foo(double P, int *I) { return P+*I; } |