1 ; RUN: llc < %s -mtriple=armv7-apple-ios | FileCheck %s
4 @G1 = external global i32
5 @G2 = external global i32
7 define i32 @f1(i32 %cond1, i32 %x1, i32 %x2, i32 %x3) {
14 %tmp1 = icmp eq i32 %cond1, 0
15 %tmp2 = select i1 %tmp1, i32 %x1, i32 %x2
16 %tmp3 = select i1 %tmp1, i32 %x2, i32 %x3
17 %tmp4 = add i32 %tmp2, %tmp3
21 @foo = external global i32
22 @bar = external global [250 x i8], align 1
24 ; CSE of cmp across BB boundary
26 define void @f2() nounwind ssp {
33 %0 = load i32, i32* @foo, align 4
34 %cmp28 = icmp sgt i32 %0, 0
35 br i1 %cmp28, label %for.body.lr.ph, label %for.cond1.preheader
37 for.body.lr.ph: ; preds = %entry
38 %1 = icmp sgt i32 %0, 1
39 %smax = select i1 %1, i32 %0, i32 1
40 call void @llvm.memset.p0i8.i32(i8* getelementptr inbounds ([250 x i8], [250 x i8]* @bar, i32 0, i32 0), i8 0, i32 %smax, i1 false)
43 for.cond1.preheader: ; preds = %entry
47 declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i1) nounwind
50 define i8* @f3(i8* %base, i32* nocapture %offset, i32 %size) nounwind {
56 %0 = load i32, i32* %offset, align 4
57 %cmp = icmp slt i32 %0, %size
58 %s = sub nsw i32 %0, %size
59 %size2 = sub nsw i32 %size, 0
60 br i1 %cmp, label %return, label %if.end
63 ; We are checking cse between %sub here and %s in entry block.
64 %sub = sub nsw i32 %0, %size2
65 %s2 = sub nsw i32 %s, %size
66 %s3 = sub nsw i32 %sub, %s2
67 ; CHECK: sub [[R1:r[0-9]+]], [[R2:r[0-9]+]], r2
68 ; CHECK: sub [[R3:r[0-9]+]], [[R1]], r2
69 ; CHECK: sub [[R4:r[0-9]+]], [[R1]], [[R3]]
72 store i32 %s3, i32* %offset, align 4
73 %add.ptr = getelementptr inbounds i8, i8* %base, i32 %sub
77 %retval.0 = phi i8* [ %add.ptr, %if.end ], [ null, %entry ]