aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorEli Friedman <eli.friedman@gmail.com>2011-12-22 22:11:19 +0000
committerEli Friedman <eli.friedman@gmail.com>2011-12-22 22:11:19 +0000
commit3a3a424a248717487de826ddb48f14deec1d2446 (patch)
tree0a86c05cceb67a03e72847d9dd2ae5464a8a3d20
parent21bcca81f4597f1c7d939e5d69067539ff804e6d (diff)
downloadexternal_llvm-3a3a424a248717487de826ddb48f14deec1d2446.zip
external_llvm-3a3a424a248717487de826ddb48f14deec1d2446.tar.gz
external_llvm-3a3a424a248717487de826ddb48f14deec1d2446.tar.bz2
Some unittests for APInt rotates; patch by Cameron McInally.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147186 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r--unittests/ADT/APIntTest.cpp32
1 files changed, 32 insertions, 0 deletions
diff --git a/unittests/ADT/APIntTest.cpp b/unittests/ADT/APIntTest.cpp
index 2195007..d5d2bc1 100644
--- a/unittests/ADT/APIntTest.cpp
+++ b/unittests/ADT/APIntTest.cpp
@@ -144,6 +144,12 @@ TEST(APIntTest, i1) {
EXPECT_EQ(zero, one.lshr(1));
EXPECT_EQ(zero, one.ashr(1));
+ // Rotates.
+ EXPECT_EQ(one, one.rotl(0));
+ EXPECT_EQ(one, one.rotl(1));
+ EXPECT_EQ(one, one.rotr(0));
+ EXPECT_EQ(one, one.rotr(1));
+
// Multiplies.
EXPECT_EQ(neg_one, neg_one * one);
EXPECT_EQ(neg_one, one * neg_one);
@@ -450,4 +456,30 @@ TEST(APIntTest, mul_clear) {
EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false));
}
+TEST(APIntTest, Rotate) {
+ EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0));
+ EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1));
+ EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2));
+ EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4));
+ EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8));
+
+ EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0));
+ EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1));
+ EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2));
+ EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4));
+ EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8));
+
+ EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0));
+ EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1));
+ EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2));
+ EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4));
+ EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8));
+
+ EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0));
+ EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1));
+ EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2));
+ EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4));
+ EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8));
+}
+
}