mirror of
https://github.com/c64scene-ar/llvm-6502.git
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fdf9624f3c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179512 91177308-0d34-0410-b5e6-96231b3b80d8
45 lines
1.5 KiB
LLVM
45 lines
1.5 KiB
LLVM
; RUN: opt < %s -basicaa -slp-vectorizer -dce -S -mtriple=i386-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
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; int foo(double *A, int n, int m) {
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; double sum = 0, v1 = 2, v0 = 3;
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; for (int i=0; i < n; ++i)
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; sum += 7*A[i*2] + 7*A[i*2+1];
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; return sum;
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; }
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;CHECK: reduce
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;CHECK: load <2 x double>
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;CHECK: fmul <2 x double>
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;CHECK: ret
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define i32 @reduce(double* nocapture %A, i32 %n, i32 %m) {
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entry:
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%cmp13 = icmp sgt i32 %n, 0
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br i1 %cmp13, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.015 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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%sum.014 = phi double [ %add6, %for.body ], [ 0.000000e+00, %entry ]
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%mul = shl nsw i32 %i.015, 1
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%arrayidx = getelementptr inbounds double* %A, i32 %mul
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%0 = load double* %arrayidx, align 4
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%mul1 = fmul double %0, 7.000000e+00
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%add12 = or i32 %mul, 1
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%arrayidx3 = getelementptr inbounds double* %A, i32 %add12
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%1 = load double* %arrayidx3, align 4
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%mul4 = fmul double %1, 7.000000e+00
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%add5 = fadd double %mul1, %mul4
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%add6 = fadd double %sum.014, %add5
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%inc = add nsw i32 %i.015, 1
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%exitcond = icmp eq i32 %inc, %n
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br i1 %exitcond, label %for.cond.for.end_crit_edge, label %for.body
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for.cond.for.end_crit_edge: ; preds = %for.body
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%phitmp = fptosi double %add6 to i32
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br label %for.end
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for.end: ; preds = %for.cond.for.end_crit_edge, %entry
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%sum.0.lcssa = phi i32 [ %phitmp, %for.cond.for.end_crit_edge ], [ 0, %entry ]
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ret i32 %sum.0.lcssa
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}
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