From 7e733eab2f11fceb24d6b4f25c27d7ba7d92d97e Mon Sep 17 00:00:00 2001 From: Nuno Lopes Date: Mon, 16 Jul 2012 20:47:16 +0000 Subject: teach ConstantRange that zero times X is always zero git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160317 91177308-0d34-0410-b5e6-96231b3b80d8 --- unittests/Support/ConstantRangeTest.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'unittests/Support') diff --git a/unittests/Support/ConstantRangeTest.cpp b/unittests/Support/ConstantRangeTest.cpp index 6d2510ced5..7d4055f889 100644 --- a/unittests/Support/ConstantRangeTest.cpp +++ b/unittests/Support/ConstantRangeTest.cpp @@ -382,6 +382,14 @@ TEST_F(ConstantRangeTest, Multiply) { EXPECT_EQ(Some.multiply(Wrap), Full); EXPECT_EQ(Wrap.multiply(Wrap), Full); + ConstantRange Zero(APInt(16, 0)); + EXPECT_EQ(Zero.multiply(Full), Zero); + EXPECT_EQ(Zero.multiply(Some), Zero); + EXPECT_EQ(Zero.multiply(Wrap), Zero); + EXPECT_EQ(Full.multiply(Zero), Zero); + EXPECT_EQ(Some.multiply(Zero), Zero); + EXPECT_EQ(Wrap.multiply(Zero), Zero); + // http://llvm.org/PR4545 EXPECT_EQ(ConstantRange(APInt(4, 1), APInt(4, 6)).multiply( ConstantRange(APInt(4, 6), APInt(4, 2))), -- cgit v1.2.3