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SLPVectorizer: Improve the cost model for loop invariant broadcast values.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179930 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem
2013-04-20 06:13:47 +00:00
parent ef332b1ca1
commit 1d2ad834f2
4 changed files with 102 additions and 12 deletions
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test/Transforms/SLPVectorizer/X86/loopinvariant.ll
+73
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; RUN: opt < %s -basicaa -slp-vectorizer -dce -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
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-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.8.0"
;CHECK: @foo
;CHECK: load <4 x i32>
;CHECK: add <4 x i32>
;CHECK: store <4 x i32>
;CHECK: load <4 x i32>
;CHECK: add <4 x i32>
;CHECK: store <4 x i32>
;CHECK: ret
define i32 @foo(i32* nocapture %A, i32 %n) #0 {
entry:
%cmp62 = icmp sgt i32 %n, 0
br i1 %cmp62, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv
%0 = load i32* %arrayidx, align 4, !tbaa !0
%add1 = add nsw i32 %0, %n
store i32 %add1, i32* %arrayidx, align 4, !tbaa !0
%1 = or i64 %indvars.iv, 1
%arrayidx4 = getelementptr inbounds i32* %A, i64 %1
%2 = load i32* %arrayidx4, align 4, !tbaa !0
%add5 = add nsw i32 %2, %n
store i32 %add5, i32* %arrayidx4, align 4, !tbaa !0
%3 = or i64 %indvars.iv, 2
%arrayidx8 = getelementptr inbounds i32* %A, i64 %3
%4 = load i32* %arrayidx8, align 4, !tbaa !0
%add9 = add nsw i32 %4, %n
store i32 %add9, i32* %arrayidx8, align 4, !tbaa !0
%5 = or i64 %indvars.iv, 3
%arrayidx12 = getelementptr inbounds i32* %A, i64 %5
%6 = load i32* %arrayidx12, align 4, !tbaa !0
%add13 = add nsw i32 %6, %n
store i32 %add13, i32* %arrayidx12, align 4, !tbaa !0
%7 = or i64 %indvars.iv, 4
%arrayidx16 = getelementptr inbounds i32* %A, i64 %7
%8 = load i32* %arrayidx16, align 4, !tbaa !0
%add17 = add nsw i32 %8, %n
store i32 %add17, i32* %arrayidx16, align 4, !tbaa !0
%9 = or i64 %indvars.iv, 5
%arrayidx20 = getelementptr inbounds i32* %A, i64 %9
%10 = load i32* %arrayidx20, align 4, !tbaa !0
%add21 = add nsw i32 %10, %n
store i32 %add21, i32* %arrayidx20, align 4, !tbaa !0
%11 = or i64 %indvars.iv, 6
%arrayidx24 = getelementptr inbounds i32* %A, i64 %11
%12 = load i32* %arrayidx24, align 4, !tbaa !0
%add25 = add nsw i32 %12, %n
store i32 %add25, i32* %arrayidx24, align 4, !tbaa !0
%13 = or i64 %indvars.iv, 7
%arrayidx28 = getelementptr inbounds i32* %A, i64 %13
%14 = load i32* %arrayidx28, align 4, !tbaa !0
%add29 = add nsw i32 %14, %n
store i32 %add29, i32* %arrayidx28, align 4, !tbaa !0
%indvars.iv.next = add i64 %indvars.iv, 8
%15 = trunc i64 %indvars.iv.next to i32
%cmp = icmp slt i32 %15, %n
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret i32 undef
}
attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
!0 = metadata !{metadata !"int", metadata !1}
!1 = metadata !{metadata !"omnipotent char", metadata !2}
!2 = metadata !{metadata !"Simple C/C++ TBAA"}