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; RUN: llc -march=hexagon -mcpu=hexagonv5 -enable-pipeliner < %s | FileCheck %s
; RUN: llc -march=hexagon -mcpu=hexagonv5 -O3 < %s | FileCheck %s
; Multiply and accumulate
; CHECK: mpyi([[REG0:r([0-9]+)]],[[REG1:r([0-9]+)]])
; CHECK-NEXT: add(r{{[0-9]+}},#4)
; CHECK-NEXT: [[REG0]] = memw(r{{[0-9]+}}+r{{[0-9]+}}<<#0)
; CHECK-NEXT: [[REG1]] = memw(r{{[0-9]+}}+r{{[0-9]+}}<<#0)
; CHECK-NEXT: endloop0
define i32 @foo(i32* %a, i32* %b, i32 %n) {
entry:
br label %for.body
for.body:
%sum.03 = phi i32 [ 0, %entry ], [ %add, %for.body ]
%arrayidx.phi = phi i32* [ %a, %entry ], [ %arrayidx.inc, %for.body ]
%arrayidx1.phi = phi i32* [ %b, %entry ], [ %arrayidx1.inc, %for.body ]
%i.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%0 = load i32, i32* %arrayidx.phi, align 4
%1 = load i32, i32* %arrayidx1.phi, align 4
%mul = mul nsw i32 %1, %0
%add = add nsw i32 %mul, %sum.03
%inc = add nsw i32 %i.02, 1
%exitcond = icmp eq i32 %inc, 10000
%arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1
%arrayidx1.inc = getelementptr i32, i32* %arrayidx1.phi, i32 1
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret i32 %add
}
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