1 ; RUN: opt -loop-reduce -S < %s | FileCheck %s 2 ; 3 ; Test LSR's intelligence regarding phi reuse. 4 ; Verify that scaled GEPs are not reused. rdar://5064068 5 6 target triple = "x86-apple-darwin" 7 8 ; CHECK: @test 9 ; multiplies are hoisted out of the loop 10 ; CHECK: while.body.lr.ph: 11 ; CHECK: mul i64 12 ; CHECK: mul i64 13 ; GEPs are ugly 14 ; CHECK: while.body: 15 ; CHECK: phi 16 ; CHECK: phi 17 ; CHECK: phi 18 ; CHECK: phi 19 ; CHECK-NOT: phi 20 ; CHECK: bitcast float* {{.*}} to i8* 21 ; CHECK: bitcast float* {{.*}} to i8* 22 ; CHECK: getelementptr i8* 23 ; CHECK: getelementptr i8* 24 25 define float @test(float* nocapture %A, float* nocapture %B, i32 %N, i32 %IA, i32 %IB) nounwind uwtable readonly ssp { 26 entry: 27 %cmp1 = icmp sgt i32 %N, 0 28 br i1 %cmp1, label %while.body.lr.ph, label %while.end 29 30 while.body.lr.ph: ; preds = %entry 31 %idx.ext = sext i32 %IA to i64 32 %idx.ext2 = sext i32 %IB to i64 33 br label %while.body 34 35 while.body: ; preds = %while.body.lr.ph, %while.body 36 %A.addr.05 = phi float* [ %A, %while.body.lr.ph ], [ %add.ptr, %while.body ] 37 %B.addr.04 = phi float* [ %B, %while.body.lr.ph ], [ %add.ptr3, %while.body ] 38 %N.addr.03 = phi i32 [ %N, %while.body.lr.ph ], [ %sub, %while.body ] 39 %Sum0.02 = phi float [ 0.000000e+00, %while.body.lr.ph ], [ %add, %while.body ] 40 %0 = load float* %A.addr.05, align 4 41 %1 = load float* %B.addr.04, align 4 42 %mul = fmul float %0, %1 43 %add = fadd float %Sum0.02, %mul 44 %add.ptr = getelementptr inbounds float* %A.addr.05, i64 %idx.ext 45 %add.ptr3 = getelementptr inbounds float* %B.addr.04, i64 %idx.ext2 46 %sub = add nsw i32 %N.addr.03, -1 47 %cmp = icmp sgt i32 %sub, 0 48 br i1 %cmp, label %while.body, label %while.end 49 50 while.end: ; preds = %while.body, %entry 51 %Sum0.0.lcssa = phi float [ 0.000000e+00, %entry ], [ %add, %while.body ] 52 ret float %Sum0.0.lcssa 53 } 54
