1; RUN: opt -mtriple=amdgcn-- -O1 -S < %s | FileCheck %s --check-prefixes=FUNC,LOOP 2; RUN: opt -mtriple=amdgcn-- -O1 -S -disable-promote-alloca-to-vector < %s | FileCheck %s --check-prefixes=FUNC,FULL-UNROLL 3 4target datalayout = "A5" 5 6; This test contains a simple loop that initializes an array declared in 7; private memory. This loop would be fully unrolled if we could not SROA 8; the alloca. Check that we successfully eliminate it before the unroll, 9; so that we do not need to fully unroll it. 10 11; FUNC-LABEL: @private_memory 12; LOOP-NOT: alloca 13; LOOP: loop.header: 14; LOOP: br i1 %{{[^,]+}}, label %exit, label %loop.header 15 16; FULL-UNROLL: alloca 17; FULL-UNROLL-COUNT-256: store i32 {{[0-9]+}}, i32 addrspace(5)* 18; FULL-UNROLL-NOT: br 19 20; FUNC: store i32 %{{[^,]+}}, i32 addrspace(1)* %out 21define amdgpu_kernel void @private_memory(i32 addrspace(1)* %out, i32 %n) { 22entry: 23 %alloca = alloca [16 x i32], addrspace(5) 24 br label %loop.header 25 26loop.header: 27 %counter = phi i32 [0, %entry], [%inc, %loop.inc] 28 br label %loop.body 29 30loop.body: 31 %salt = xor i32 %counter, %n 32 %idx = and i32 %salt, 15 33 %ptr = getelementptr [16 x i32], [16 x i32] addrspace(5)* %alloca, i32 0, i32 %idx 34 store i32 %counter, i32 addrspace(5)* %ptr 35 br label %loop.inc 36 37loop.inc: 38 %inc = add i32 %counter, 1 39 %cmp = icmp sge i32 %counter, 255 40 br i1 %cmp, label %exit, label %loop.header 41 42exit: 43 %gep = getelementptr [16 x i32], [16 x i32] addrspace(5)* %alloca, i32 0, i32 %n 44 %load = load i32, i32 addrspace(5)* %gep 45 store i32 %load, i32 addrspace(1)* %out 46 ret void 47} 48