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| author | Chris Lattner <sabre@nondot.org> | 2005-12-02 00:11:20 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-12-02 00:11:20 +0000 |
| commit | 865874c88a387c4c1614db61083d2c2504dc1cdf (patch) | |
| tree | 8ad572b307f7097e0bb3c5ce86e1ae570492787e | |
| parent | fe14b34d83c085e6b7d46e915fdd9c21344e323b (diff) | |
add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24572 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/README.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt index c9f23d598b..57aec86d2e 100644 --- a/lib/Target/X86/README.txt +++ b/lib/Target/X86/README.txt @@ -12,6 +12,12 @@ long long test(long long X, long long Y) { return X*Y; } by using the EAX result from the mul. We should add a similar node for DIVREM. +another case is: + +long long test(int X, int Y) { return (long long)X*Y; } + +... which should only be one imul instruction. + //===---------------------------------------------------------------------===// This should be one DIV/IDIV instruction, not a libcall: |