1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes=instcombine -S < %s | FileCheck %s 3 4; This test checks a regression in the select operand folding combine, in which 5; Constant::getUniqueInteger would crash for a scalable-vector zeroinitializer. 6define <vscale x 1 x i32> @select_opt(<vscale x 1 x i32> %b, <vscale x 1 x i1> %m) { 7; CHECK-LABEL: @select_opt( 8; CHECK-NEXT: [[C:%.*]] = add nsw <vscale x 1 x i32> [[B:%.*]], splat (i32 2) 9; CHECK-NEXT: [[D:%.*]] = select <vscale x 1 x i1> [[M:%.*]], <vscale x 1 x i32> [[C]], <vscale x 1 x i32> [[B]] 10; CHECK-NEXT: ret <vscale x 1 x i32> [[D]] 11; 12 %head = insertelement <vscale x 1 x i32> undef, i32 2, i32 0 13 %splat = shufflevector <vscale x 1 x i32> %head, <vscale x 1 x i32> undef, <vscale x 1 x i32> zeroinitializer 14 %c = add nsw <vscale x 1 x i32> %b, %splat 15 %d = select <vscale x 1 x i1> %m, <vscale x 1 x i32> %c, <vscale x 1 x i32> %b 16 ret <vscale x 1 x i32> %d 17} 18 19define <vscale x 2 x i64> @load_scalable_of_selected_ptrs(ptr %p0, ptr %p1, i64 %idx) { 20; CHECK-LABEL: @load_scalable_of_selected_ptrs( 21; CHECK-NEXT: entry: 22; CHECK-NEXT: [[ARRAYIDX0:%.*]] = getelementptr inbounds i32, ptr [[P0:%.*]], i64 [[IDX:%.*]] 23; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, ptr [[P1:%.*]], i64 [[IDX]] 24; CHECK-NEXT: [[L0:%.*]] = load i32, ptr [[ARRAYIDX0]], align 4 25; CHECK-NEXT: [[L1:%.*]] = load i32, ptr [[ARRAYIDX1]], align 4 26; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[L0]], [[L1]] 27; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], ptr [[ARRAYIDX0]], ptr [[ARRAYIDX1]] 28; CHECK-NEXT: [[RET:%.*]] = load <vscale x 2 x i64>, ptr [[SEL]], align 16 29; CHECK-NEXT: ret <vscale x 2 x i64> [[RET]] 30; 31entry: 32 ; Test introduced in response to a TypeSize warning arising from isSafeToLoadUnconditionally via instcombine. 33 ; deref (p0[0] < p1[0] ? p0 : p1) as <vscale x 2 x i64>. 34 %arrayidx0 = getelementptr inbounds i32, ptr %p0, i64 %idx 35 %arrayidx1 = getelementptr inbounds i32, ptr %p1, i64 %idx 36 %l0 = load i32, ptr %arrayidx0 37 %l1 = load i32, ptr %arrayidx1 38 %cmp = icmp slt i32 %l0, %l1 39 %sel = select i1 %cmp, ptr %arrayidx0, ptr %arrayidx1 40 %ret = load <vscale x 2 x i64>, ptr %sel 41 ret <vscale x 2 x i64> %ret 42} 43