1 ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mattr=sse2 -mcpu=corei7 -o /dev/null 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 24
