strided-load-i8.ll
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; REQUIRES: asserts
; RUN: opt -loop-vectorize -S -mattr=avx512bw --debug-only=loop-vectorize < %s 2>&1| FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@A = global [10240 x i8] zeroinitializer, align 16
@B = global [10240 x i8] zeroinitializer, align 16
; Function Attrs: nounwind uwtable
define void @load_i8_stride2() {
;CHECK-LABEL: load_i8_stride2
;CHECK: Found an estimated cost of 1 for VF 1 For instruction: %1 = load
;CHECK: Found an estimated cost of 1 for VF 2 For instruction: %1 = load
;CHECK: Found an estimated cost of 1 for VF 4 For instruction: %1 = load
;CHECK: Found an estimated cost of 1 for VF 8 For instruction: %1 = load
;CHECK: Found an estimated cost of 4 for VF 16 For instruction: %1 = load
;CHECK: Found an estimated cost of 8 for VF 32 For instruction: %1 = load
;CHECK: Found an estimated cost of 20 for VF 64 For instruction: %1 = load
entry:
br label %for.body
for.body: ; preds = %for.body, %entry
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%0 = shl nsw i64 %indvars.iv, 1
%arrayidx = getelementptr inbounds [10240 x i8], [10240 x i8]* @A, i64 0, i64 %0
%1 = load i8, i8* %arrayidx, align 2
%arrayidx2 = getelementptr inbounds [10240 x i8], [10240 x i8]* @B, i64 0, i64 %indvars.iv
store i8 %1, i8* %arrayidx2, align 1
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}
define void @load_i8_stride3() {
;CHECK-LABEL: load_i8_stride3
;CHECK: Found an estimated cost of 1 for VF 1 For instruction: %1 = load
;CHECK: Found an estimated cost of 1 for VF 2 For instruction: %1 = load
;CHECK: Found an estimated cost of 1 for VF 4 For instruction: %1 = load
;CHECK: Found an estimated cost of 4 for VF 8 For instruction: %1 = load
;CHECK: Found an estimated cost of 13 for VF 16 For instruction: %1 = load
;CHECK: Found an estimated cost of 16 for VF 32 For instruction: %1 = load
;CHECK: Found an estimated cost of 25 for VF 64 For instruction: %1 = load
entry:
br label %for.body
for.body: ; preds = %for.body, %entry
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%0 = mul nsw i64 %indvars.iv, 3
%arrayidx = getelementptr inbounds [10240 x i8], [10240 x i8]* @A, i64 0, i64 %0
%1 = load i8, i8* %arrayidx, align 2
%arrayidx2 = getelementptr inbounds [10240 x i8], [10240 x i8]* @B, i64 0, i64 %indvars.iv
store i8 %1, i8* %arrayidx2, align 1
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}
define void @load_i8_stride4() {
;CHECK-LABEL: load_i8_stride4
;CHECK: Found an estimated cost of 1 for VF 1 For instruction: %1 = load
;CHECK: Found an estimated cost of 1 for VF 2 For instruction: %1 = load
;CHECK: Found an estimated cost of 1 for VF 4 For instruction: %1 = load
;CHECK: Found an estimated cost of 4 for VF 8 For instruction: %1 = load
;CHECK: Found an estimated cost of 8 for VF 16 For instruction: %1 = load
;CHECK: Found an estimated cost of 20 for VF 32 For instruction: %1 = load
;CHECK: Found an estimated cost of 59 for VF 64 For instruction: %1 = load
entry:
br label %for.body
for.body: ; preds = %for.body, %entry
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%0 = shl nsw i64 %indvars.iv, 2
%arrayidx = getelementptr inbounds [10240 x i8], [10240 x i8]* @A, i64 0, i64 %0
%1 = load i8, i8* %arrayidx, align 2
%arrayidx2 = getelementptr inbounds [10240 x i8], [10240 x i8]* @B, i64 0, i64 %indvars.iv
store i8 %1, i8* %arrayidx2, align 1
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}
define void @load_i8_stride5() {
;CHECK-LABEL: load_i8_stride5
;CHECK: Found an estimated cost of 1 for VF 1 For instruction: %1 = load
;CHECK: Found an estimated cost of 1 for VF 2 For instruction: %1 = load
;CHECK: Found an estimated cost of 4 for VF 4 For instruction: %1 = load
;CHECK: Found an estimated cost of 8 for VF 8 For instruction: %1 = load
;CHECK: Found an estimated cost of 20 for VF 16 For instruction: %1 = load
;CHECK: Found an estimated cost of 39 for VF 32 For instruction: %1 = load
;CHECK: Found an estimated cost of 78 for VF 64 For instruction: %1 = load
entry:
br label %for.body
for.body: ; preds = %for.body, %entry
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%0 = mul nsw i64 %indvars.iv, 5
%arrayidx = getelementptr inbounds [10240 x i8], [10240 x i8]* @A, i64 0, i64 %0
%1 = load i8, i8* %arrayidx, align 2
%arrayidx2 = getelementptr inbounds [10240 x i8], [10240 x i8]* @B, i64 0, i64 %indvars.iv
store i8 %1, i8* %arrayidx2, align 1
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}