| Andrea Di Biagio | 12de5f3 | 2014-01-15 20:16:14 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mattr=sse2 -mcpu=corei7 -o /dev/null |
| Andrea Di Biagio | d7c03ec | 2014-01-15 19:51:32 +0000 | [diff] [blame] | 2 | |
| 3 | ; Revision 199135 introduced a wrong check in method |
| 4 | ; DAGCombiner::SimplifyVBinOp in an attempt to refactor some code |
| 5 | ; using the new method 'BuildVectorSDNode::isConstant' when possible. |
| 6 | ; |
| 7 | ; However the modified code in method SimplifyVBinOp now wrongly |
| 8 | ; checks that the operands of a vector bin-op are both constants. |
| 9 | ; |
| 10 | ; With that wrong change, this test started failing because of a |
| 11 | ; 'fatal error in the backend': |
| 12 | ; Cannot select: 0x2e329d0: v4i32 = BUILD_VECTOR 0x2e2ea00, 0x2e2ea00, 0x2e2ea00, 0x2e2ea00 |
| 13 | ; 0x2e2ea00: i32 = Constant<1> [ID=4] |
| 14 | ; 0x2e2ea00: i32 = Constant<1> [ID=4] |
| 15 | ; 0x2e2ea00: i32 = Constant<1> [ID=4] |
| 16 | ; 0x2e2ea00: i32 = Constant<1> [ID=4] |
| 17 | |
| 18 | define <8 x i32> @reduced_test_case() { |
| 19 | %Shuff = shufflevector <8 x i32> zeroinitializer, <8 x i32> zeroinitializer, <8 x i32> <i32 1, i32 3, i32 undef, i32 7, i32 9, i32 11, i32 13, i32 15> |
| 20 | %B23 = sub <8 x i32> %Shuff, <i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1> |
| 21 | ret <8 x i32> %B23 |
| 22 | } |
| 23 | |