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db3c93e416
This will remove suboptimal branching from the generated ll/sc loops. The extra simplification pass affects a lot of testcases, which have been modified to accommodate this change: either by modifying the test to become immune to the CFG simplification, or (less preferablt) by adding option -hexagon-initial-cfg-clenaup=0. llvm-svn: 338774
56 lines
2.0 KiB
LLVM
56 lines
2.0 KiB
LLVM
; RUN: llc -march=hexagon -hexagon-initial-cfg-cleanup=0 < %s | FileCheck %s
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; Test that we generate the correct Phi name in the last couple of epilog
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; blocks, when there are 3 epilog blocks. The Phi was scheduled in stage
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; 2, so the computation for the number of Phis needs to be adjusted when
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; the incoming prolog block is from prolog 0 or prolog 1.
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; Note: the pipeliner no longer generates a 3 stage pipeline for this test.
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; CHECK: loop0
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; CHECK: [[REG0:r([0-9]+)]] = add(r{{[0-8]+}},#8)
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; CHECK: endloop0
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; CHECK: [[REG0]] = add(r{{[0-9]+}},#8)
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; Function Attrs: nounwind
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define void @f0(i16* nocapture readonly %a0) #0 {
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b0:
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%v0 = alloca [129 x i32], align 8
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br i1 undef, label %b1, label %b3
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b1: ; preds = %b0
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br label %b2
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b2: ; preds = %b2, %b1
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%v1 = phi i16* [ %a0, %b1 ], [ %v2, %b2 ]
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%v2 = phi i16* [ undef, %b1 ], [ %v15, %b2 ]
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%v3 = phi i32* [ null, %b1 ], [ %v4, %b2 ]
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%v4 = phi i32* [ null, %b1 ], [ %v14, %b2 ]
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%v5 = phi i32 [ 0, %b1 ], [ %v13, %b2 ]
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%v6 = phi i16* [ undef, %b1 ], [ %v12, %b2 ]
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%v7 = load i16, i16* %v2, align 2
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%v8 = sext i16 %v7 to i32
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%v9 = call i32 @llvm.hexagon.M2.mpy.ll.s0(i32 %v8, i32 %v8) #2
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%v10 = load i16, i16* %v6, align 2
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%v11 = call i32 @llvm.hexagon.M2.mpy.acc.sat.ll.s0(i32 %v9, i32 undef, i32 undef) #2
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store i32 %v11, i32* %v4, align 4
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%v12 = getelementptr inbounds i16, i16* %v6, i32 -1
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%v13 = add i32 %v5, 1
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%v14 = getelementptr inbounds i32, i32* %v3, i32 2
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%v15 = getelementptr inbounds i16, i16* %v1, i32 2
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%v16 = icmp slt i32 %v13, undef
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br i1 %v16, label %b2, label %b3
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b3: ; preds = %b2, %b0
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unreachable
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}
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; Function Attrs: nounwind readnone
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declare i32 @llvm.hexagon.M2.mpy.ll.s0(i32, i32) #1
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; Function Attrs: nounwind readnone
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declare i32 @llvm.hexagon.M2.mpy.acc.sat.ll.s0(i32, i32, i32) #1
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attributes #0 = { nounwind "target-cpu"="hexagonv60" }
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attributes #1 = { nounwind readnone }
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attributes #2 = { nounwind }
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