; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -passes=loop-unroll < %s | FileCheck %s
; Test that max iterations count to analyze (specific for the target)
; is enough to make the inner loop completely unrolled
; CHECK-LABEL: foo
define void @foo(ptr addrspace(5) %ptrB, ptr addrspace(5) %ptrC, i32 %A, i32 %A2, float %M) {
bb:
br label %bb2
bb2: ; preds = %bb7, %bb
%i = phi i32 [ 0, %bb ], [ %i8, %bb7 ]
br label %bb4
bb3: ; preds = %bb7
ret void
bb4: ; preds = %bb10, %bb2
%i5 = phi i32 [ 0, %bb2 ], [ %i11, %bb10 ]
%i6 = add nuw nsw i32 %i5, %i
br label %for.body
bb7: ; preds = %bb10
%i8 = add nuw nsw i32 %i, 1
%i9 = icmp eq i32 %i8, 8
br i1 %i9, label %bb3, label %bb2
bb10: ; preds = %for.body
%i11 = add nuw nsw i32 %i5, 1
%cmpj = icmp ult i32 %i11, 8
br i1 %cmpj, label %bb7, label %bb4
; CHECK-LABEL: for.body
; CHECK-NOT: %phi = phi {{.*}}
for.body: ; preds = %bb4, %for.body
%phi = phi i32 [ 0, %bb4 ], [ %inc, %for.body ]
%mul = shl nuw nsw i32 %phi, 6
%add = add i32 %A, %mul
%arrayidx = getelementptr inbounds float, ptr addrspace(5) %ptrC, i32 %add
%ld1 = load float, ptr addrspace(5) %arrayidx, align 4
%mul2 = shl nuw nsw i32 %phi, 3
%add2 = add i32 %A2, %mul2
%arrayidx2 = getelementptr inbounds float, ptr addrspace(5) %ptrB, i32 %add2
%ld2 = load float, ptr addrspace(5) %arrayidx2, align 4
%mul3 = fmul contract float %M, %ld2
%add3 = fadd contract float %ld1, %mul3
store float %add3, ptr addrspace(5) %arrayidx, align 4
%add1 = add nuw nsw i32 %add, 2048
%arrayidx3 = getelementptr inbounds float, ptr addrspace(5) %ptrC, i32 %add1
%ld3 = load float, ptr addrspace(5) %arrayidx3, align 4
%mul4 = fmul contract float %ld2, %M
%add4 = fadd contract float %ld3, %mul4
store float %add4, ptr addrspace(5) %arrayidx3, align 4
%inc = add nuw nsw i32 %phi, 1
%cmpi = icmp ult i32 %phi, 31
br i1 %cmpi, label %for.body, label %bb10
}
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