1 ; RUN: llc -verify-machineinstrs -mtriple=aarch64-linux-gnueabi < %s | FileCheck %s 2 3 ; CHECK-LABEL: test1 4 ; CHECK: tbz {{w[0-9]}}, #3, {{.LBB0_3}} 5 ; CHECK: tbz w[[REG1:[0-9]+]], #2, {{.LBB0_3}} 6 ; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]], #0x4 7 ; CHECK-NOT: cbz [[REG2]], {{.LBB0_3}} 8 9 ; CHECK: b 10 define void @test1(i64 %A, i64 %B) { 11 entry: 12 %and = and i64 %A, 4 13 %notlhs = icmp eq i64 %and, 0 14 %and.1 = and i64 %B, 8 15 %0 = icmp eq i64 %and.1, 0 16 %1 = or i1 %0, %notlhs 17 br i1 %1, label %if.end3, label %if.then2 18 19 if.then2: ; preds = %entry 20 tail call void @foo(i64 %A, i64 %B) 21 br label %if.end3 22 23 if.end3: ; preds = %if.then2, %entry 24 ret void 25 } 26 27 ; CHECK-LABEL: test2 28 ; CHECK: cbz {{x[0-9]}}, {{.LBB1_3}} 29 ; CHECK: tbz w[[REG1:[0-9]+]], #3, {{.LBB1_3}} 30 ; CHECK-NOT: and [REG2:x[0-9]+], x[[REG1]], #0x08 31 ; CHECK-NOT: cbz [[REG2]], {{.LBB1_3}} 32 33 define void @test2(i64 %A, i64* readonly %B) #0 { 34 entry: 35 %tobool = icmp eq i64* %B, null 36 %and = and i64 %A, 8 37 %tobool1 = icmp eq i64 %and, 0 38 %or.cond = or i1 %tobool, %tobool1 39 br i1 %or.cond, label %if.end3, label %if.then2 40 41 if.then2: ; preds = %entry 42 %0 = load i64, i64* %B, align 4 43 tail call void @foo(i64 %A, i64 %0) 44 br label %if.end3 45 46 if.end3: ; preds = %entry, %if.then2 47 ret void 48 } 49 50 ; Make sure we use the W variant when log2(mask) is < 32. 51 ; CHECK-LABEL: test3 52 ; CHECK: tbz {{w[0-9]}}, #3, {{.LBB2_3}} 53 ; CHECK: tbz w[[REG1:[0-9]+]], #28, {{.LBB2_3}} 54 ; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]] 55 ; CHECK-NOT: cbz [[REG2]], {{.LBB2_3}} 56 define void @test3(i64 %A, i64 %B) { 57 entry: 58 %shift = shl i64 1, 28 59 %and = and i64 %A, %shift 60 %notlhs = icmp eq i64 %and, 0 61 %and.1 = and i64 %B, 8 62 %0 = icmp eq i64 %and.1, 0 63 %1 = or i1 %0, %notlhs 64 br i1 %1, label %if.then2, label %if.end3 65 66 if.then2: ; preds = %entry 67 tail call void @foo(i64 %A, i64 %B) 68 br label %if.end3 69 70 if.end3: ; preds = %if.then2, %entry 71 ret void 72 } 73 74 ; CHECK-LABEL: test4 75 ; CHECK: tbz {{w[0-9]}}, #3, {{.LBB3_3}} 76 ; CHECK: tbz [[REG1:x[0-9]+]], #35, {{.LBB3_3}} 77 ; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]] 78 ; CHECK-NOT: cbz [[REG2]], {{.LBB2_3}} 79 define void @test4(i64 %A, i64 %B) { 80 entry: 81 %shift = shl i64 1, 35 82 %and = and i64 %A, %shift 83 %notlhs = icmp eq i64 %and, 0 84 %and.1 = and i64 %B, 8 85 %0 = icmp eq i64 %and.1, 0 86 %1 = or i1 %0, %notlhs 87 br i1 %1, label %if.then2, label %if.end3 88 89 if.then2: ; preds = %entry 90 tail call void @foo(i64 %A, i64 %B) 91 br label %if.end3 92 93 if.end3: ; preds = %if.then2, %entry 94 ret void 95 } 96 97 98 declare void @foo(i64, i64) 99
