1 ; RUN: opt -arm-codegenprepare -arm-disable-cgp=false -mtriple=armv8 -verify %s -S -o - | FileCheck %s
3 ; CHECK: clear_structures
4 define i32 @clear_structures(i8* nocapture readonly %fmt, [1 x i32] %ap.coerce, i8* %out, void (i32, i8*)* nocapture %write) {
6 br label %while.cond.outer
9 %fmt.addr.0.ph = phi i8* [ %fmt, %entry ], [ %fmt.addr.3, %while.cond.outer.backedge ]
10 %0 = load i8, i8* %fmt.addr.0.ph, align 1
14 switch i8 %0, label %while.cond [
15 i8 0, label %while.end48
16 i8 37, label %while.cond2
20 %flags.0 = phi i32 [ %or, %while.cond2 ], [ 0, %while.cond ]
21 %fmt.addr.0.pn = phi i8* [ %fmt.addr.1, %while.cond2 ], [ %fmt.addr.0.ph, %while.cond ]
22 %fmt.addr.1 = getelementptr inbounds i8, i8* %fmt.addr.0.pn, i32 1
23 %1 = load i8, i8* %fmt.addr.1, align 1
24 ; CHECK: add i8 [[LOAD:%[^ ]+]], -32
26 %conv6 = zext i8 %sub to i32
27 %shl = shl i32 1, %conv6
28 %and = and i32 %shl, 75785
29 %tobool7 = icmp eq i32 %and, 0
30 %or = or i32 %shl, %flags.0
31 br i1 %tobool7, label %while.cond10.preheader, label %while.cond2
33 while.cond10.preheader:
34 ; CHECK: [[ADD:%[^ ]+]] = add i8 [[LOAD]], -48
35 ; CHECK: icmp ult i8 [[ADD]], 10
36 %.off = add i8 %1, -48
37 %2 = icmp ult i8 %.off, 10
38 br i1 %2, label %while.cond10, label %while.end18.split
41 br label %while.cond10
44 %cmp20 = icmp eq i8 %1, 46
45 br i1 %cmp20, label %if.then22, label %cond.end
48 %incdec.ptr23 = getelementptr inbounds i8, i8* %fmt.addr.0.pn, i32 2
49 %.pr74 = load i8, i8* %incdec.ptr23, align 1
50 ; CHECK: [[LOAD2:[^ ]+]] = load i8, i8*
51 ; CHECK: [[ZEXT:[^ ]+]] = zext i8 [[LOAD2]] to i32
52 ; CHECK: sub i32 [[ZEXT]], 48
53 %.pr74.off = add i8 %.pr74, -48
54 %3 = icmp ult i8 %.pr74.off, 10
55 br i1 %3, label %while.cond24, label %cond.end
58 br label %while.cond24
61 %fmt.addr.3 = phi i8* [ %fmt.addr.1, %while.end18.split ], [ %incdec.ptr23, %if.then22 ]
62 %and39 = and i32 %flags.0, 2048
63 %tobool40 = icmp eq i32 %and39, 0
64 br i1 %tobool40, label %while.cond.outer.backedge, label %if.then43
66 while.cond.outer.backedge:
67 br label %while.cond.outer
70 tail call void %write(i32 43, i8* %out) #1
71 br label %while.cond.outer.backedge