| ; RUN: llc -mtriple=aarch64-apple-ios7.0 -disable-block-placement -aarch64-tbz-offset-bits=4 -o - %s | FileCheck %s |
| define i32 @test_asm_length(i32 %in) { |
| ; CHECK-LABEL: test_asm_length: |
| |
| ; It would be more natural to use just one "tbnz %false" here, but if the |
| ; number of instructions in the asm is counted reasonably, that block is out |
| ; of the limited range we gave tbz. So branch relaxation has to invert the |
| ; condition. |
| ; CHECK: tbz w0, #0, [[TRUE:LBB[0-9]+_[0-9]+]] |
| ; CHECK: b [[FALSE:LBB[0-9]+_[0-9]+]] |
| |
| ; CHECK: [[TRUE]]: |
| ; CHECK: orr w0, wzr, #0x4 |
| ; CHECK: nop |
| ; CHECK: nop |
| ; CHECK: nop |
| ; CHECK: nop |
| ; CHECK: nop |
| ; CHECK: nop |
| ; CHECK: ret |
| |
| ; CHECK: [[FALSE]]: |
| ; CHECK: ret |
| |
| %val = and i32 %in, 1 |
| %tst = icmp eq i32 %val, 0 |
| br i1 %tst, label %true, label %false |
| |
| true: |
| call void asm sideeffect "nop\0A\09nop\0A\09nop\0A\09nop\0A\09nop\0A\09nop", ""() |
| ret i32 4 |
| |
| false: |
| ret i32 0 |
| } |
