forked from OSchip/llvm-project
50 lines
1.9 KiB
LLVM
50 lines
1.9 KiB
LLVM
; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -loop-unroll -unroll-threshold=150 < %s | FileCheck %s
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; Test that max iterations count to analyze (specific for the target)
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; is enough to make the inner loop completely unrolled
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define hidden void @foo(float addrspace(1)* %ptrG, float addrspace(3)* %ptrL, i32 %A, i32 %A2, i32 %M) {
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bb:
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br label %bb2
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bb2: ; preds = %bb7, %bb
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%i = phi i32 [ 0, %bb ], [ %i8, %bb7 ]
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br label %bb4
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bb3: ; preds = %bb7
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ret void
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bb4: ; preds = %bb10, %bb2
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%i5 = phi i32 [ 0, %bb2 ], [ %i11, %bb10 ]
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%i6 = add nuw nsw i32 %i5, %i
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br label %for.body
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bb7: ; preds = %bb10
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%i8 = add nuw nsw i32 %i, 1
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%i9 = icmp eq i32 %i8, 8
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br i1 %i9, label %bb3, label %bb2
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bb10: ; preds = %for.body
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%i11 = add nuw nsw i32 %i5, 1
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%cmpj = icmp ult i32 %i11, 8
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br i1 %cmpj, label %bb7, label %bb4
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; CHECK: for.body:
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; CHECK-NOT: %phi = phi {{.*}}
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for.body: ; preds = %for.body, %bb4
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%phi = phi i32 [ 0, %bb4 ], [ %k, %for.body ]
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%mul = shl nuw nsw i32 %phi, 5
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%add1 = add i32 %A, %mul
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%add2 = add i32 %add1, %M
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%arrayidx = getelementptr inbounds float, float addrspace(3)* %ptrL, i32 %add2
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%bc = bitcast float addrspace(3)* %arrayidx to i32 addrspace(3)*
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%ld = load i32, i32 addrspace(3)* %bc, align 4
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%mul2 = shl nuw nsw i32 %phi, 3
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%add3 = add nuw nsw i32 %mul2, %A2
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%arrayidx2 = getelementptr inbounds float, float addrspace(1)* %ptrG, i32 %add3
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%bc2 = bitcast float addrspace(1)* %arrayidx2 to i32 addrspace(1)*
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store i32 %ld, i32 addrspace(1)* %bc2, align 4
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%k = add nuw nsw i32 %phi, 1
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%cmpk = icmp ult i32 %k, 32
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br i1 %cmpk, label %for.body, label %bb10
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}
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