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https://github.com/c64scene-ar/llvm-6502.git
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38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
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; RUN: opt -loop-unroll -simplifycfg -sroa %s -S -o - | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-v16:16:16-v24:32:32-v32:32:32-v48:64:64-v64:64:64-v96:128:128-v128:128:128-v192:256:256-v256:256:256-v512:512:512-v1024:1024:1024-v2048:2048:2048-n32:64"
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target triple = "r600--"
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; This test contains a simple loop that initializes an array declared in
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; private memory. We want to make sure these kinds of loops are always
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; unrolled, because private memory is slow.
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; CHECK-LABEL: @test
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; CHECK-NOT: alloca
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; CHECK: store i32 5, i32 addrspace(1)* %out
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define void @test(i32 addrspace(1)* %out) {
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entry:
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%0 = alloca [32 x i32]
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br label %loop.header
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loop.header:
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%counter = phi i32 [0, %entry], [%inc, %loop.inc]
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br label %loop.body
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loop.body:
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%ptr = getelementptr [32 x i32]* %0, i32 0, i32 %counter
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store i32 %counter, i32* %ptr
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br label %loop.inc
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loop.inc:
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%inc = add i32 %counter, 1
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%1 = icmp sge i32 %counter, 32
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br i1 %1, label %exit, label %loop.header
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exit:
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%2 = getelementptr [32 x i32]* %0, i32 0, i32 5
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%3 = load i32* %2
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store i32 %3, i32 addrspace(1)* %out
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ret void
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}
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