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- ; RUN: opt < %s -loop-reduce -S | FileCheck %s
- ; CHECK: bb1:
- ; CHECK: load double, double* [[IV:%[^,]+]]
- ; CHECK: store double {{.*}}, double* [[IV]]
- ; CHECK: getelementptr double, double*
- ; CHECK-NOT: cast
- ; CHECK: br {{.*}} label %bb1
- ; This test tests several things. The load and store should use the
- ; same address instead of having it computed twice, and SCEVExpander should
- ; be able to reconstruct the full getelementptr, despite it having a few
- ; obstacles set in its way.
- ; We only check that the inner loop (bb1-bb2) is "reduced" because LSR
- ; currently only operates on inner loops.
- target datalayout = "e-p:64:64:64-n32:64"
- define void @foo(i64 %n, i64 %m, i64 %o, i64 %q, double* nocapture %p) nounwind {
- entry:
- %tmp = icmp sgt i64 %n, 0 ; <i1> [#uses=1]
- br i1 %tmp, label %bb.nph3, label %return
- bb.nph: ; preds = %bb2.preheader
- %tmp1 = mul i64 %tmp16, %i.02 ; <i64> [#uses=1]
- %tmp2 = mul i64 %tmp19, %i.02 ; <i64> [#uses=1]
- br label %bb1
- bb1: ; preds = %bb2, %bb.nph
- %j.01 = phi i64 [ %tmp9, %bb2 ], [ 0, %bb.nph ] ; <i64> [#uses=3]
- %tmp3 = add i64 %j.01, %tmp1 ; <i64> [#uses=1]
- %tmp4 = add i64 %j.01, %tmp2 ; <i64> [#uses=1]
- %z0 = add i64 %tmp3, 5203
- %tmp5 = getelementptr double, double* %p, i64 %z0 ; <double*> [#uses=1]
- %tmp6 = load double, double* %tmp5, align 8 ; <double> [#uses=1]
- %tmp7 = fdiv double %tmp6, 2.100000e+00 ; <double> [#uses=1]
- %z1 = add i64 %tmp4, 5203
- %tmp8 = getelementptr double, double* %p, i64 %z1 ; <double*> [#uses=1]
- store double %tmp7, double* %tmp8, align 8
- %tmp9 = add i64 %j.01, 1 ; <i64> [#uses=2]
- br label %bb2
- bb2: ; preds = %bb1
- %tmp10 = icmp slt i64 %tmp9, %m ; <i1> [#uses=1]
- br i1 %tmp10, label %bb1, label %bb2.bb3_crit_edge
- bb2.bb3_crit_edge: ; preds = %bb2
- br label %bb3
- bb3: ; preds = %bb2.preheader, %bb2.bb3_crit_edge
- %tmp11 = add i64 %i.02, 1 ; <i64> [#uses=2]
- br label %bb4
- bb4: ; preds = %bb3
- %tmp12 = icmp slt i64 %tmp11, %n ; <i1> [#uses=1]
- br i1 %tmp12, label %bb2.preheader, label %bb4.return_crit_edge
- bb4.return_crit_edge: ; preds = %bb4
- br label %bb4.return_crit_edge.split
- bb4.return_crit_edge.split: ; preds = %bb.nph3, %bb4.return_crit_edge
- br label %return
- bb.nph3: ; preds = %entry
- %tmp13 = icmp sgt i64 %m, 0 ; <i1> [#uses=1]
- %tmp14 = mul i64 %n, 37 ; <i64> [#uses=1]
- %tmp15 = mul i64 %tmp14, %o ; <i64> [#uses=1]
- %tmp16 = mul i64 %tmp15, %q ; <i64> [#uses=1]
- %tmp17 = mul i64 %n, 37 ; <i64> [#uses=1]
- %tmp18 = mul i64 %tmp17, %o ; <i64> [#uses=1]
- %tmp19 = mul i64 %tmp18, %q ; <i64> [#uses=1]
- br i1 %tmp13, label %bb.nph3.split, label %bb4.return_crit_edge.split
- bb.nph3.split: ; preds = %bb.nph3
- br label %bb2.preheader
- bb2.preheader: ; preds = %bb.nph3.split, %bb4
- %i.02 = phi i64 [ %tmp11, %bb4 ], [ 0, %bb.nph3.split ] ; <i64> [#uses=3]
- br i1 true, label %bb.nph, label %bb3
- return: ; preds = %bb4.return_crit_edge.split, %entry
- ret void
- }
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