| ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mattr=sse2 -mcpu=corei7 -o /dev/null |
| |
| ; Revision 199135 introduced a wrong check in method |
| ; DAGCombiner::SimplifyVBinOp in an attempt to refactor some code |
| ; using the new method 'BuildVectorSDNode::isConstant' when possible. |
| ; |
| ; However the modified code in method SimplifyVBinOp now wrongly |
| ; checks that the operands of a vector bin-op are both constants. |
| ; |
| ; With that wrong change, this test started failing because of a |
| ; 'fatal error in the backend': |
| ; Cannot select: 0x2e329d0: v4i32 = BUILD_VECTOR 0x2e2ea00, 0x2e2ea00, 0x2e2ea00, 0x2e2ea00 |
| ; 0x2e2ea00: i32 = Constant<1> [ID=4] |
| ; 0x2e2ea00: i32 = Constant<1> [ID=4] |
| ; 0x2e2ea00: i32 = Constant<1> [ID=4] |
| ; 0x2e2ea00: i32 = Constant<1> [ID=4] |
| |
| define <8 x i32> @reduced_test_case() { |
| %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> |
| %B23 = sub <8 x i32> %Shuff, <i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1, i32 -1> |
| ret <8 x i32> %B23 |
| } |
| |
