1 ; RUN: llc < %s -print-after=finalize-isel -o /dev/null 2>&1 | FileCheck %s
3 ; Hexagon runs passes that renumber the basic blocks, causing this test
9 ; Make sure we have the correct weight attached to each successor.
10 define i32 @test2(i32 %x) nounwind uwtable readnone ssp {
11 ; CHECK-LABEL: Machine code for function test2:
13 %conv = sext i32 %x to i64
14 switch i64 %conv, label %return [
22 ; CHECK: successors: %bb.1(0x75f8ebf2), %bb.4(0x0a07140e)
24 ; CHECK: successors: %bb.2(0x60606068), %bb.5(0x1f9f9f98)
26 ; CHECK: successors: %bb.1(0x3cf3cf4b), %bb.6(0x430c30b5)
28 ; CHECK: successors: %bb.1(0x2e8ba2d7), %bb.3(0x51745d29)
31 ; this call will prevent simplifyCFG from optimizing the block away in ARM/AArch64.
39 %retval.0 = phi i32 [ 5, %sw.bb1 ], [ 1, %sw.bb ], [ 0, %entry ]
43 !0 = !{!"branch_weights", i32 7, i32 6, i32 4, i32 4, i32 64, i21 1000}
47 define void @left_leaning_weight_balanced_tree(i32 %x) {
49 switch i32 %x, label %return [
57 bb0: tail call void @g(i32 0) br label %return
58 bb1: tail call void @g(i32 1) br label %return
59 bb2: tail call void @g(i32 2) br label %return
60 bb3: tail call void @g(i32 3) br label %return
61 bb4: tail call void @g(i32 4) br label %return
62 bb5: tail call void @g(i32 5) br label %return
65 ; Check that we set branch weights on the pivot cmp instruction correctly.
66 ; Cases {0,100,200,300} go on the left with weight 13; cases {400,500} go on the
67 ; right with weight 20.
69 ; CHECK-LABEL: Machine code for function left_leaning_weight_balanced_tree:
71 ; CHECK-NOT: Successors
72 ; CHECK: successors: %bb.8(0x32d2d2d3), %bb.9(0x4d2d2d2d)
75 !1 = !{!"branch_weights",
81 i32 1, i32 10, i32 10}