70 lines
3.5 KiB
LLVM
70 lines
3.5 KiB
LLVM
; RUN: opt -passes=loop-vectorize -mtriple=x86_64-unknown-linux -force-vector-width=2 -force-vector-interleave=1 -S %s | FileCheck %s
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define ptr @test(ptr noalias %src, ptr noalias %dst) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], [[PRED_LOAD_CONTINUE2:%.*]] ]
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; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, %vector.ph ], [ [[VEC_IND_NEXT:%.*]], [[PRED_LOAD_CONTINUE2]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
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; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 1
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[SRC:%.*]], i64 [[TMP1]]
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; CHECK-NEXT: [[TMP3:%.*]] = icmp eq <2 x i64> [[VEC_IND]], zeroinitializer
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; CHECK-NEXT: [[TMP4:%.*]] = xor <2 x i1> [[TMP3]], splat (i1 true)
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; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x i1> [[TMP4]], i32 0
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; CHECK-NEXT: br i1 [[TMP5]], label [[PRED_LOAD_IF:%.*]], label [[PRED_LOAD_CONTINUE:%.*]]
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; CHECK: pred.load.if:
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; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, ptr [[SRC]], i64 [[TMP0]]
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; CHECK-NEXT: [[TMP7:%.*]] = load i32, ptr [[TMP6]], align 4
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; CHECK-NEXT: [[TMP8:%.*]] = insertelement <2 x i32> poison, i32 [[TMP7]], i32 0
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; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE]]
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; CHECK: pred.load.continue:
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; CHECK-NEXT: [[TMP9:%.*]] = phi <2 x i32> [ poison, %vector.body ], [ [[TMP8]], [[PRED_LOAD_IF]] ]
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; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x i1> [[TMP4]], i32 1
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; CHECK-NEXT: br i1 [[TMP10]], label [[PRED_LOAD_IF1:%.*]], label [[PRED_LOAD_CONTINUE2]]
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; CHECK: pred.load.if1:
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; CHECK-NEXT: [[TMP11:%.*]] = load i32, ptr [[TMP2]], align 4
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; CHECK-NEXT: [[TMP12:%.*]] = insertelement <2 x i32> [[TMP9]], i32 [[TMP11]], i32 1
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; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE2]]
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; CHECK: pred.load.continue2:
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; CHECK-NEXT: [[TMP13:%.*]] = phi <2 x i32> [ [[TMP9]], [[PRED_LOAD_CONTINUE]] ], [ [[TMP12]], [[PRED_LOAD_IF1]] ]
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; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[TMP3]], <2 x i32> zeroinitializer, <2 x i32> [[TMP13]]
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; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds i32, ptr [[DST:%.*]], i64 [[TMP0]]
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; CHECK-NEXT: [[TMP15:%.*]] = getelementptr inbounds i32, ptr [[TMP14]], i32 0
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; CHECK-NEXT: store <2 x i32> [[PREDPHI]], ptr [[TMP15]], align 4
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
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; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], splat (i64 2)
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; CHECK-NEXT: [[TMP17:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
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; CHECK-NEXT: br i1 [[TMP17]], label [[MIDDLE_BLOCK:%.*]], label %vector.body
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; CHECK: middle.block:
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; CHECK-NEXT: br i1 true, label %exit, label %scalar.ph
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; CHECK: exit:
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; CHECK-NEXT: [[GEP_LCSSA:%.*]] = phi ptr [ %gep.src, %loop.latch ], [ [[TMP2]], %middle.block ]
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; CHECK-NEXT: ret ptr [[GEP_LCSSA]]
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;
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
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%gep.src = getelementptr inbounds i32, ptr %src, i64 %iv
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%cmp.1 = icmp eq i64 %iv, 0
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br i1 %cmp.1, label %loop.latch, label %then
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then:
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%l = load i32, ptr %gep.src, align 4
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br label %loop.latch
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loop.latch:
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%m = phi i32 [ %l, %then ], [ 0, %loop.header ]
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%gep.dst = getelementptr inbounds i32, ptr %dst, i64 %iv
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store i32 %m, ptr %gep.dst, align 4
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%iv.next = add nsw i64 %iv, 1
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%cmp.2 = icmp slt i64 %iv.next, 1000
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br i1 %cmp.2, label %loop.header, label %exit
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exit:
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%gep.lcssa = phi ptr [ %gep.src, %loop.latch ]
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ret ptr %gep.lcssa
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}
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