llvm-6502/test/CodeGen/Thumb2/v8_IT_5.ll
Joey Gouly b57d99694b [ARMv8] Prevent generation of deprecated IT blocks on ARMv8 in Thumb mode.
IT blocks can only be one instruction lonf, and can only contain a subset of
the 16 instructions.

Patch by Artyom Skrobov!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190309 91177308-0d34-0410-b5e6-96231b3b80d8
2013-09-09 14:21:49 +00:00

63 lines
1.2 KiB
LLVM

; RUN: llc < %s -mtriple=thumbv8 | FileCheck %s
; CHECK: it ne
; CHECK-NEXT: cmpne
; CHECK-NEXT: beq
; CHECK: cmp
; CHECK-NEXT: beq
; CHECK-NEXT: %if.else163
; CHECK-NEXT: mov.w
; CHECK-NEXT: b
; CHECK-NEXT: %if.else145
; CHECK-NEXT: mov.w
%struct.hc = type { i32, i32, i32, i32 }
define i32 @t(i32 %type) optsize {
entry:
br i1 undef, label %if.then, label %if.else
if.then:
unreachable
if.else:
br i1 undef, label %if.then15, label %if.else18
if.then15:
unreachable
if.else18:
switch i32 %type, label %if.else173 [
i32 3, label %if.then115
i32 1, label %if.then102
]
if.then102:
br i1 undef, label %cond.true10.i, label %t.exit
cond.true10.i:
br label %t.exit
t.exit:
unreachable
if.then115:
br i1 undef, label %if.else163, label %if.else145
if.else145:
%call150 = call fastcc %struct.hc* @foo(%struct.hc* undef, i32 34865152) optsize
br label %while.body172
if.else163:
%call168 = call fastcc %struct.hc* @foo(%struct.hc* undef, i32 34078720) optsize
br label %while.body172
while.body172:
br label %while.body172
if.else173:
ret i32 -1
}
declare hidden fastcc %struct.hc* @foo(%struct.hc* nocapture, i32) nounwind optsize