| ; RUN: llc -verify-machineinstrs -mtriple=aarch64-linux-gnueabi < %s | FileCheck %s |
| |
| ; CHECK-LABEL: test1 |
| ; CHECK: tbz {{w[0-9]}}, #3, {{.LBB0_3}} |
| ; CHECK: tbz w[[REG1:[0-9]+]], #2, {{.LBB0_3}} |
| ; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]], #0x4 |
| ; CHECK-NOT: cbz [[REG2]], {{.LBB0_3}} |
| |
| ; CHECK: b |
| define void @test1(i64 %A, i64 %B) { |
| entry: |
| %and = and i64 %A, 4 |
| %notlhs = icmp eq i64 %and, 0 |
| %and.1 = and i64 %B, 8 |
| %0 = icmp eq i64 %and.1, 0 |
| %1 = or i1 %0, %notlhs |
| br i1 %1, label %if.end3, label %if.then2 |
| |
| if.then2: ; preds = %entry |
| tail call void @foo(i64 %A, i64 %B) |
| br label %if.end3 |
| |
| if.end3: ; preds = %if.then2, %entry |
| ret void |
| } |
| |
| ; CHECK-LABEL: test2 |
| ; CHECK: cbz {{x[0-9]}}, {{.LBB1_3}} |
| ; CHECK: tbz w[[REG1:[0-9]+]], #3, {{.LBB1_3}} |
| ; CHECK-NOT: and [REG2:x[0-9]+], x[[REG1]], #0x08 |
| ; CHECK-NOT: cbz [[REG2]], {{.LBB1_3}} |
| |
| define void @test2(i64 %A, i64* readonly %B) #0 { |
| entry: |
| %tobool = icmp eq i64* %B, null |
| %and = and i64 %A, 8 |
| %tobool1 = icmp eq i64 %and, 0 |
| %or.cond = or i1 %tobool, %tobool1 |
| br i1 %or.cond, label %if.end3, label %if.then2 |
| |
| if.then2: ; preds = %entry |
| %0 = load i64, i64* %B, align 4 |
| tail call void @foo(i64 %A, i64 %0) |
| br label %if.end3 |
| |
| if.end3: ; preds = %entry, %if.then2 |
| ret void |
| } |
| |
| ; Make sure we use the W variant when log2(mask) is < 32. |
| ; CHECK-LABEL: test3 |
| ; CHECK: tbz {{w[0-9]}}, #3, {{.LBB2_3}} |
| ; CHECK: tbz w[[REG1:[0-9]+]], #28, {{.LBB2_3}} |
| ; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]] |
| ; CHECK-NOT: cbz [[REG2]], {{.LBB2_3}} |
| define void @test3(i64 %A, i64 %B) { |
| entry: |
| %shift = shl i64 1, 28 |
| %and = and i64 %A, %shift |
| %notlhs = icmp eq i64 %and, 0 |
| %and.1 = and i64 %B, 8 |
| %0 = icmp eq i64 %and.1, 0 |
| %1 = or i1 %0, %notlhs |
| br i1 %1, label %if.then2, label %if.end3 |
| |
| if.then2: ; preds = %entry |
| tail call void @foo(i64 %A, i64 %B) |
| br label %if.end3 |
| |
| if.end3: ; preds = %if.then2, %entry |
| ret void |
| } |
| |
| ; CHECK-LABEL: test4 |
| ; CHECK: tbz {{w[0-9]}}, #3, {{.LBB3_3}} |
| ; CHECK: tbz [[REG1:x[0-9]+]], #35, {{.LBB3_3}} |
| ; CHECK-NOT: and [[REG2:x[0-9]+]], x[[REG1]] |
| ; CHECK-NOT: cbz [[REG2]], {{.LBB2_3}} |
| define void @test4(i64 %A, i64 %B) { |
| entry: |
| %shift = shl i64 1, 35 |
| %and = and i64 %A, %shift |
| %notlhs = icmp eq i64 %and, 0 |
| %and.1 = and i64 %B, 8 |
| %0 = icmp eq i64 %and.1, 0 |
| %1 = or i1 %0, %notlhs |
| br i1 %1, label %if.then2, label %if.end3 |
| |
| if.then2: ; preds = %entry |
| tail call void @foo(i64 %A, i64 %B) |
| br label %if.end3 |
| |
| if.end3: ; preds = %if.then2, %entry |
| ret void |
| } |
| |
| |
| declare void @foo(i64, i64) |
