fp_latency.ll
3.32 KB
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; RUN: llc -O2 -march=hexagon -fp-contract=fast -pipeliner-prune-loop-carried=false < %s | FileCheck %s
; Test that there is 1 packet between the FP result and its use.
; CHECK: loop0([[LOOP0:.LBB[0-9_]+]],
; CHECK: [[LOOP0]]
; CHECK: [[REG0:(r[0-9]+)]] += sfmpy(r{{[0-9]+}},r{{[0-9]+}})
; CHECK: }
; CHECK: }
; CHECK: r{{[0-9]+}} = {{.*}}[[REG0]]
; Function Attrs: nounwind readnone
define void @f0(i32 %a0, i32 %a1) #0 {
b0:
%v0 = alloca [1000 x float], align 64
%v1 = alloca [1000 x float], align 64
%v2 = alloca [1000 x float], align 64
%v3 = alloca [1000 x float], align 64
%v4 = bitcast [1000 x float]* %v0 to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* %v4) #2
%v5 = bitcast [1000 x float]* %v1 to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* %v5) #2
%v6 = bitcast [1000 x float]* %v2 to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* %v6) #2
%v7 = bitcast [1000 x float]* %v3 to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* %v7) #2
%v8 = icmp sgt i32 %a1, 0
%v9 = add i32 %a1, -1
%v10 = getelementptr [1000 x float], [1000 x float]* %v3, i32 0, i32 0
br label %b1
b1: ; preds = %b3, %b0
%v11 = phi i32 [ 0, %b0 ], [ %v34, %b3 ]
br i1 %v8, label %b2, label %b3
b2: ; preds = %b2, %b1
%v12 = phi float* [ %v33, %b2 ], [ %v10, %b1 ]
%v13 = phi i32 [ %v31, %b2 ], [ 0, %b1 ]
%v14 = mul nsw i32 %v13, %a1
%v15 = add nsw i32 %v14, %v11
%v16 = getelementptr inbounds [1000 x float], [1000 x float]* %v1, i32 0, i32 %v15
%v17 = load float, float* %v16, align 4, !tbaa !0
%v18 = fmul float %v17, %v17
%v19 = mul nsw i32 %v13, 25
%v20 = add nsw i32 %v19, %v11
%v21 = getelementptr inbounds [1000 x float], [1000 x float]* %v2, i32 0, i32 %v20
%v22 = load float, float* %v21, align 4, !tbaa !0
%v23 = fmul float %v22, %v22
%v24 = fadd float %v18, %v23
%v25 = load float, float* %v12, align 4, !tbaa !0
%v26 = fmul float %v25, %v25
%v27 = fadd float %v24, %v26
%v28 = getelementptr inbounds [1000 x float], [1000 x float]* %v0, i32 0, i32 %v20
%v29 = load float, float* %v28, align 4, !tbaa !0
%v30 = fadd float %v29, %v27
store float %v30, float* %v28, align 4, !tbaa !0
%v31 = add nuw nsw i32 %v13, 1
%v32 = icmp eq i32 %v13, %v9
%v33 = getelementptr float, float* %v12, i32 1
br i1 %v32, label %b3, label %b2
b3: ; preds = %b2, %b1
%v34 = add nuw nsw i32 %v11, 1
%v35 = icmp eq i32 %v34, 25
br i1 %v35, label %b4, label %b1
b4: ; preds = %b3
call void @llvm.lifetime.end.p0i8(i64 4000, i8* %v7) #2
call void @llvm.lifetime.end.p0i8(i64 4000, i8* %v6) #2
call void @llvm.lifetime.end.p0i8(i64 4000, i8* %v5) #2
call void @llvm.lifetime.end.p0i8(i64 4000, i8* %v4) #2
ret void
}
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
attributes #0 = { nounwind readnone "target-cpu"="hexagonv60" "target-features"="+hvxv60,+hvx-length64b" }
attributes #1 = { argmemonly nounwind }
attributes #2 = { nounwind }
!0 = !{!1, !1, i64 0}
!1 = !{!"float", !2, i64 0}
!2 = !{!"omnipotent char", !3, i64 0}
!3 = !{!"Simple C/C++ TBAA"}