1 ; RUN: opt -loop-reduce -S < %s | FileCheck %s
3 ; Test LSR's intelligence regarding phi reuse.
4 ; Verify that scaled GEPs are not reused. rdar://5064068
6 target triple = "x86_64-apple-darwin"
8 ; Provide legal integer types.
9 target datalayout = "n8:16:32:64"
13 ; multiplies are hoisted out of the loop
14 ; CHECK: while.body.lr.ph:
24 ; CHECK: bitcast float* {{.*}} to i1*
25 ; CHECK: bitcast float* {{.*}} to i1*
26 ; CHECK: getelementptr i1, i1*
27 ; CHECK: getelementptr i1, i1*
29 define float @test(float* nocapture %A, float* nocapture %B, i32 %N, i32 %IA, i32 %IB) nounwind uwtable readonly ssp {
31 %cmp1 = icmp sgt i32 %N, 0
32 br i1 %cmp1, label %while.body.lr.ph, label %while.end
34 while.body.lr.ph: ; preds = %entry
35 %idx.ext = sext i32 %IA to i64
36 %idx.ext2 = sext i32 %IB to i64
39 while.body: ; preds = %while.body.lr.ph, %while.body
40 %A.addr.05 = phi float* [ %A, %while.body.lr.ph ], [ %add.ptr, %while.body ]
41 %B.addr.04 = phi float* [ %B, %while.body.lr.ph ], [ %add.ptr3, %while.body ]
42 %N.addr.03 = phi i32 [ %N, %while.body.lr.ph ], [ %sub, %while.body ]
43 %Sum0.02 = phi float [ 0.000000e+00, %while.body.lr.ph ], [ %add, %while.body ]
44 %0 = load float, float* %A.addr.05, align 4
45 %1 = load float, float* %B.addr.04, align 4
46 %mul = fmul float %0, %1
47 %add = fadd float %Sum0.02, %mul
48 %add.ptr = getelementptr inbounds float, float* %A.addr.05, i64 %idx.ext
49 %add.ptr3 = getelementptr inbounds float, float* %B.addr.04, i64 %idx.ext2
50 %sub = add nsw i32 %N.addr.03, -1
51 %cmp = icmp sgt i32 %sub, 0
52 br i1 %cmp, label %while.body, label %while.end
54 while.end: ; preds = %while.body, %entry
55 %Sum0.0.lcssa = phi float [ 0.000000e+00, %entry ], [ %add, %while.body ]
56 ret float %Sum0.0.lcssa