From db3c169f3a3102d40352ba63fd14a75c819c7adc Mon Sep 17 00:00:00 2001
From: Eli Friedman <eli.friedman@gmail.com>
Date: Tue, 16 Jun 2009 06:58:29 +0000
Subject: Add some generic expansion logic for SMULO and UMULO.  Fixes UMULO
 support for x86, and UMULO/SMULO for many architectures, including PPC
 (PR4201), ARM, and Cell. The resulting expansion isn't perfect, but it's not
 bad.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73477 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/umul-with-overflow.ll | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 test/CodeGen/X86/umul-with-overflow.ll

(limited to 'test/CodeGen/X86/umul-with-overflow.ll')

diff --git a/test/CodeGen/X86/umul-with-overflow.ll b/test/CodeGen/X86/umul-with-overflow.ll
new file mode 100644
index 0000000000..9e69154f10
--- /dev/null
+++ b/test/CodeGen/X86/umul-with-overflow.ll
@@ -0,0 +1,8 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep "\\\\\\\<mul"
+
+declare {i32, i1} @llvm.umul.with.overflow.i32(i32 %a, i32 %b)
+define i1 @a(i32 %x) zeroext nounwind {
+  %res = call {i32, i1} @llvm.umul.with.overflow.i32(i32 %x, i32 3)
+  %obil = extractvalue {i32, i1} %res, 1
+  ret i1 %obil
+}
-- 
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