1; RUN: llc -mtriple=aarch64-apple-darwin -fast-isel -fast-isel-abort=1 -verify-machineinstrs < %s | FileCheck %s 2 3; CHECK-LABEL: test_or 4; CHECK: cbnz w0, {{LBB[0-9]+_2}} 5; CHECK: cbz w1, {{LBB[0-9]+_1}} 6define i64 @test_or(i32 %a, i32 %b) { 7bb1: 8 %0 = icmp eq i32 %a, 0 9 %1 = icmp eq i32 %b, 0 10 %or.cond = or i1 %0, %1 11 br i1 %or.cond, label %bb3, label %bb4, !prof !0 12 13bb3: 14 ret i64 0 15 16bb4: 17 %2 = call i64 @bar() 18 ret i64 %2 19} 20 21; CHECK-LABEL: test_and 22; CHECK: cbnz w0, {{LBB[0-9]+_2}} 23; CHECK: cbz w1, {{LBB[0-9]+_1}} 24define i64 @test_and(i32 %a, i32 %b) { 25bb1: 26 %0 = icmp ne i32 %a, 0 27 %1 = icmp ne i32 %b, 0 28 %or.cond = and i1 %0, %1 29 br i1 %or.cond, label %bb4, label %bb3, !prof !1 30 31bb3: 32 ret i64 0 33 34bb4: 35 %2 = call i64 @bar() 36 ret i64 %2 37} 38 39; If the branch is unpredictable, don't add another branch. 40 41; CHECK-LABEL: test_or_unpredictable 42; CHECK: cmp w0, #0 43; CHECK-NEXT: cset w8, eq 44; CHECK-NEXT: cmp w1, #0 45; CHECK-NEXT: cset w9, eq 46; CHECK-NEXT: orr w8, w8, w9 47; CHECK-NEXT: tbnz w8, #0, 48define i64 @test_or_unpredictable(i32 %a, i32 %b) { 49bb1: 50 %0 = icmp eq i32 %a, 0 51 %1 = icmp eq i32 %b, 0 52 %or.cond = or i1 %0, %1 53 br i1 %or.cond, label %bb3, label %bb4, !unpredictable !2 54 55bb3: 56 ret i64 0 57 58bb4: 59 %2 = call i64 @bar() 60 ret i64 %2 61} 62 63; CHECK-LABEL: test_and_unpredictable 64; CHECK: cmp w0, #0 65; CHECK-NEXT: cset w8, ne 66; CHECK-NEXT: cmp w1, #0 67; CHECK-NEXT: cset w9, ne 68; CHECK-NEXT: and w8, w8, w9 69; CHECK-NEXT: tbz w8, #0, 70define i64 @test_and_unpredictable(i32 %a, i32 %b) { 71bb1: 72 %0 = icmp ne i32 %a, 0 73 %1 = icmp ne i32 %b, 0 74 %or.cond = and i1 %0, %1 75 br i1 %or.cond, label %bb4, label %bb3, !unpredictable !2 76 77bb3: 78 ret i64 0 79 80bb4: 81 %2 = call i64 @bar() 82 ret i64 %2 83} 84 85declare i64 @bar() 86 87!0 = !{!"branch_weights", i32 5128, i32 32} 88!1 = !{!"branch_weights", i32 1024, i32 4136} 89!2 = !{} 90 91