1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-22 18:54:02 +01:00
llvm-mirror/test/CodeGen/ARM/fast-isel-shift-materialize.ll
Tim Northover ab39f1740c MachO: trap unreachable instructions
Debugability is more important than saving 4 bytes to let us to fall
through to nonense.

llvm-svn: 330073
2018-04-13 22:25:20 +00:00

26 lines
744 B
LLVM

; RUN: llc %s -o - -verify-machineinstrs -fast-isel=true | FileCheck %s
target datalayout = "e-m:o-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32"
target triple = "thumbv7-apple-ios8.0.0"
; When materializing the '2' for the shifts below, the second shift kills the vreg
; we materialize in to. However, the first shift was also killing that vreg.
; This fails the machine verifier because the second use then thinks its reading an
; undefined register.
; CHECK: lsr.w
; CHECK: lsr.w
declare void @foo(i32, i32)
; Function Attrs: minsize
define i32 @test(i32 %tmp3, i32 %tmp9) #0 {
bb:
%tmp4 = lshr i32 %tmp3, 2
%tmp10 = lshr i32 %tmp9, 2
call void @foo(i32 %tmp10, i32 %tmp4)
ret i32 undef
}
attributes #0 = { minsize }