1; RUN: llc %s -o - -fast-isel=true -O1 -verify-machineinstrs | FileCheck %s
2
3target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
4target triple = "x86_64-apple-unknown"
5
6; This test failed the machine verifier because the trunc at the start of the
7; method was extracing a subreg and killing the source register.  The kill flag was
8; invalid here as the source of the trunc could still be used elsewhere.
9
10; CHECK-LABEL: @test
11
12define i32 @test(i32 %block8x8) {
13bb:
14  %tmp9 = trunc i32 %block8x8 to i1
15  %tmp10 = zext i1 %tmp9 to i32
16  %tmp11 = mul i32 %tmp10, 8
17  %tmp12 = zext i32 %tmp11 to i64
18  br label %bb241
19
20bb241:                                            ; preds = %bb241, %bb
21  %lsr.iv3 = phi i64 [ %lsr.iv.next4, %bb241 ], [ %tmp12, %bb ]
22  %lsr.iv1 = phi i32 [ %lsr.iv.next2, %bb241 ], [ 0, %bb ]
23  %lsr.iv.next2 = add nuw nsw i32 %lsr.iv1, 1
24  %lsr.iv.next4 = add i64 %lsr.iv3, 32
25  %exitcond = icmp eq i32 %lsr.iv.next2, 8
26  br i1 %exitcond, label %.preheader.preheader, label %bb241
27
28.preheader.preheader:                             ; preds = %bb241
29  %tmp18 = lshr i32 %block8x8, 1
30  br label %bb270
31
32bb270:                                            ; preds = %bb270, %.preheader.preheader
33  %lsr.iv = phi i32 [ %lsr.iv.next, %bb270 ], [ %tmp18, %.preheader.preheader ]
34  %lsr.iv.next = add i32 %lsr.iv, 4
35  %tmp272 = icmp slt i32 %lsr.iv.next, 100
36  br i1 %tmp272, label %bb270, label %.loopexit
37
38.loopexit:                                        ; preds = %bb270
39  ret i32 0
40}
41