mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-24 06:30:19 +00:00
36 lines
955 B
LLVM
36 lines
955 B
LLVM
|
; 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
|
||
|
|
}
|