forked from OSchip/llvm-project
48 lines
1.8 KiB
LLVM
48 lines
1.8 KiB
LLVM
; RUN: opt < %s -basicaa -slp-vectorizer -dce -S -mtriple=i386-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
|
|
|
|
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
|
|
target triple = "i386-apple-macosx10.8.0"
|
|
|
|
; int foo(double *A, int n, int m) {
|
|
; double sum = 0, v1 = 2, v0 = 3;
|
|
; for (int i=0; i < n; ++i)
|
|
; sum += 7*A[i*2] + 7*A[i*2+1];
|
|
; return sum;
|
|
; }
|
|
|
|
;CHECK: reduce
|
|
;CHECK: load <2 x double>
|
|
;CHECK: fmul <2 x double>
|
|
;CHECK: ret
|
|
define i32 @reduce(double* nocapture %A, i32 %n, i32 %m) {
|
|
entry:
|
|
%cmp13 = icmp sgt i32 %n, 0
|
|
br i1 %cmp13, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %entry, %for.body
|
|
%i.015 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
|
|
%sum.014 = phi double [ %add6, %for.body ], [ 0.000000e+00, %entry ]
|
|
%mul = shl nsw i32 %i.015, 1
|
|
%arrayidx = getelementptr inbounds double, double* %A, i32 %mul
|
|
%0 = load double, double* %arrayidx, align 4
|
|
%mul1 = fmul double %0, 7.000000e+00
|
|
%add12 = or i32 %mul, 1
|
|
%arrayidx3 = getelementptr inbounds double, double* %A, i32 %add12
|
|
%1 = load double, double* %arrayidx3, align 4
|
|
%mul4 = fmul double %1, 7.000000e+00
|
|
%add5 = fadd double %mul1, %mul4
|
|
%add6 = fadd double %sum.014, %add5
|
|
%inc = add nsw i32 %i.015, 1
|
|
%exitcond = icmp eq i32 %inc, %n
|
|
br i1 %exitcond, label %for.cond.for.end_crit_edge, label %for.body
|
|
|
|
for.cond.for.end_crit_edge: ; preds = %for.body
|
|
%phitmp = fptosi double %add6 to i32
|
|
br label %for.end
|
|
|
|
for.end: ; preds = %for.cond.for.end_crit_edge, %entry
|
|
%sum.0.lcssa = phi i32 [ %phitmp, %for.cond.for.end_crit_edge ], [ 0, %entry ]
|
|
ret i32 %sum.0.lcssa
|
|
}
|
|
|