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; RUN: llc < %s -mcpu=atom -mtriple=i686-linux | FileCheck %s
; CHECK: addl
; CHECK-NEXT:leal
; CHECK-NEXT:decl
; CHECK-NEXT:jne
; Test for the FixupLEAs pre-emit pass. An LEA should be substituted for the ADD
; that increments the array pointer because it is within 5 instructions of the
; corresponding load. The ADD precedes the load by following the loop back edge.
; Original C code
;int test(int n, int * array)
;{
; int sum = 0;
; for(int i = 0; i < n; i++)
; sum += array[i];
; return sum;
;}
define i32 @test(i32 %n, i32* nocapture %array) {
entry:
%cmp4 = icmp sgt i32 %n, 0
br i1 %cmp4, label %for.body, label %for.end
for.body:
%i.06 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
%sum.05 = phi i32 [ %add, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32* %array, i32 %i.06
%0 = load i32* %arrayidx, align 4
%add = add nsw i32 %0, %sum.05
%inc = add nsw i32 %i.06, 1
%exitcond = icmp eq i32 %inc, %n
br i1 %exitcond, label %for.end, label %for.body
for.end:
%sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
ret i32 %sum.0.lcssa
}
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