forked from OSchip/llvm-project
52 lines
1.8 KiB
LLVM
52 lines
1.8 KiB
LLVM
; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
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; ScalarEvolution should be able to compute a maximum trip count
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; value sufficient to fold away both sext casts.
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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define float @t(float* %pTmp1, float* %peakWeight, float* %nrgReducePeakrate, i32 %bim) nounwind {
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; CHECK-LABEL: Classifying expressions for: @t
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entry:
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%tmp3 = load float, float* %peakWeight, align 4
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%tmp2538 = icmp sgt i32 %bim, 0
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br i1 %tmp2538, label %bb.nph, label %bb4
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bb.nph:
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br label %bb
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bb:
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%distERBhi.036 = phi float [ %tmp10, %bb1 ], [ 0.000000e+00, %bb.nph ]
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%hiPart.035 = phi i32 [ %tmp12, %bb1 ], [ 0, %bb.nph ]
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%peakCount.034 = phi float [ %tmp19, %bb1 ], [ %tmp3, %bb.nph ]
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%tmp6 = sext i32 %hiPart.035 to i64
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%tmp7 = getelementptr float, float* %pTmp1, i64 %tmp6
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; CHECK: %tmp6 = sext i32 %hiPart.035 to i64
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%bb>
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%tmp8 = load float, float* %tmp7, align 4
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%tmp10 = fadd float %tmp8, %distERBhi.036
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%tmp12 = add i32 %hiPart.035, 1
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%tmp15 = sext i32 %tmp12 to i64
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%tmp16 = getelementptr float, float* %peakWeight, i64 %tmp15
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; CHECK: %tmp15 = sext i32 %tmp12 to i64
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; CHECK-NEXT: --> {1,+,1}<nuw><nsw><%bb>
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%tmp17 = load float, float* %tmp16, align 4
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%tmp19 = fadd float %tmp17, %peakCount.034
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br label %bb1
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bb1:
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%tmp21 = fcmp olt float %tmp10, 2.500000e+00
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%tmp25 = icmp slt i32 %tmp12, %bim
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%tmp27 = and i1 %tmp21, %tmp25
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br i1 %tmp27, label %bb, label %bb1.bb4_crit_edge
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bb1.bb4_crit_edge:
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br label %bb4
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bb4:
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%distERBhi.0.lcssa = phi float [ %tmp10, %bb1.bb4_crit_edge ], [ 0.000000e+00, %entry ]
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%peakCount.0.lcssa = phi float [ %tmp19, %bb1.bb4_crit_edge ], [ %tmp3, %entry ]
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%tmp31 = fdiv float %peakCount.0.lcssa, %distERBhi.0.lcssa
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ret float %tmp31
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}
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