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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37239 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt
index 477838d0e5..9ac0bb5972 100644
--- a/lib/Target/X86/README.txt
+++ b/lib/Target/X86/README.txt
@@ -26,6 +26,15 @@ long long test(int X, int Y) { return (long long)X*Y; }
 
 ... which should only be one imul instruction.
 
+or:
+
+unsigned long long int t2(unsigned int a, unsigned int b) {
+       return (unsigned long long)a * b;
+}
+
+... which should be one mul instruction.
+
+
 This can be done with a custom expander, but it would be nice to move this to
 generic code.