| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -instcombine -S < %s | FileCheck %s |
| |
| ; This test checks a regression in the select operand folding combine, in which |
| ; Constant::getUniqueInteger would crash for a scalable-vector zeroinitializer. |
| define <vscale x 1 x i32> @select_opt(<vscale x 1 x i32> %b, <vscale x 1 x i1> %m) { |
| ; CHECK-LABEL: @select_opt( |
| ; CHECK-NEXT: [[C:%.*]] = add nsw <vscale x 1 x i32> [[B:%.*]], shufflevector (<vscale x 1 x i32> insertelement (<vscale x 1 x i32> undef, i32 2, i32 0), <vscale x 1 x i32> undef, <vscale x 1 x i32> zeroinitializer) |
| ; CHECK-NEXT: [[D:%.*]] = select <vscale x 1 x i1> [[M:%.*]], <vscale x 1 x i32> [[C]], <vscale x 1 x i32> [[B]] |
| ; CHECK-NEXT: ret <vscale x 1 x i32> [[D]] |
| ; |
| %head = insertelement <vscale x 1 x i32> undef, i32 2, i32 0 |
| %splat = shufflevector <vscale x 1 x i32> %head, <vscale x 1 x i32> undef, <vscale x 1 x i32> zeroinitializer |
| %c = add nsw <vscale x 1 x i32> %b, %splat |
| %d = select <vscale x 1 x i1> %m, <vscale x 1 x i32> %c, <vscale x 1 x i32> %b |
| ret <vscale x 1 x i32> %d |
| } |