55 lines
2.5 KiB
LLVM
55 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -O3 < %s | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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declare void @use(i8)
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define i16 @test(ptr %ptr) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[FIRST:%.*]] = load i8, ptr [[PTR:%.*]], align 1
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; CHECK-NEXT: tail call void @use(i8 [[FIRST]]) #[[ATTR2:[0-9]+]]
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; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <8 x i16> [ zeroinitializer, [[ENTRY]] ], [ [[TMP4:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[VEC_PHI1:%.*]] = phi <8 x i16> [ zeroinitializer, [[ENTRY]] ], [ [[TMP5:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i8, ptr [[PTR]], i64 [[INDEX]]
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; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <8 x i8>, ptr [[TMP0]], align 1
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, ptr [[TMP0]], i64 8
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; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <8 x i8>, ptr [[TMP1]], align 1
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; CHECK-NEXT: [[TMP2:%.*]] = zext <8 x i8> [[WIDE_LOAD]] to <8 x i16>
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; CHECK-NEXT: [[TMP3:%.*]] = zext <8 x i8> [[WIDE_LOAD2]] to <8 x i16>
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; CHECK-NEXT: [[TMP4]] = add <8 x i16> [[VEC_PHI]], [[TMP2]]
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; CHECK-NEXT: [[TMP5]] = add <8 x i16> [[VEC_PHI1]], [[TMP3]]
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
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; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
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; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: middle.block:
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; CHECK-NEXT: [[BIN_RDX:%.*]] = add <8 x i16> [[TMP5]], [[TMP4]]
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; CHECK-NEXT: [[TMP7:%.*]] = tail call i16 @llvm.vector.reduce.add.v8i16(<8 x i16> [[BIN_RDX]])
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; CHECK-NEXT: ret i16 [[TMP7]]
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;
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entry:
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%first = load i8, ptr %ptr
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call void @use(i8 %first) readonly
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br label %loop
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loop:
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%accum = phi i16 [ 0, %entry ], [ %accum.next, %loop ]
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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%gep = getelementptr inbounds i8, ptr %ptr, i64 %iv
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%val = load i8, ptr %gep, align 1
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%iv.next = add nuw i64 %iv, 1
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%val.ext = zext i8 %val to i16
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%accum.next = add i16 %accum, %val.ext
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%exit.cond = icmp eq i64 %iv.next, 1024
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br i1 %exit.cond, label %exit, label %loop
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exit:
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%lcssa.phi = phi i16 [ %accum.next, %loop ]
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ret i16 %lcssa.phi
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}
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