6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-19 03:24:09 +00:00
Code Issues Projects Releases Wiki Activity

fix corner case in ConstantRange::intersectWith().

Browse Source 
this fixes the missed optimization I was seeing in the CorrelatedValuePropagation pass

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157032 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nuno Lopes
2012-05-18 00:14:36 +00:00
parent 59c15e920c
commit fbb7a73631
2 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
unittests/Support/ConstantRangeTest.cpp
View File

@ -232,6 +232,11 @@ TEST_F(ConstantRangeTest, IntersectWith) {
ConstantRange LHS(APInt(16, 4), APInt(16, 2));
ConstantRange RHS(APInt(16, 6), APInt(16, 5));
EXPECT_TRUE(LHS.intersectWith(RHS) == LHS);
// previous bug: intersection of [min, 3) and [2, max) should be 2
LHS = ConstantRange(APInt(32, -2147483648), APInt(32, 3));
RHS = ConstantRange(APInt(32, 2), APInt(32, 2147483648));
EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2)));
}
TEST_F(ConstantRangeTest, UnionWith) {