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[PBQP] Add a testcase for r220302: Fix coalescing benefits
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220316 91177308-0d34-0410-b5e6-96231b3b80d8
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test/CodeGen/AArch64/PBQP-coalesce-benefit.ll
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test/CodeGen/AArch64/PBQP-coalesce-benefit.ll
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; RUN: llc < %s -verify-machineinstrs -mtriple=aarch64-none-linux-gnu -mcpu=cortex-a57 -mattr=+neon -fp-contract=fast -regalloc=pbqp -pbqp-coalescing | FileCheck %s
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; CHECK-LABEL: test:
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define i32 @test(i32 %acc, i32* nocapture readonly %c) {
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entry:
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%0 = load i32* %c, align 4
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; CHECK-NOT: mov w{{[0-9]*}}, w0
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%add = add nsw i32 %0, %acc
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%arrayidx1 = getelementptr inbounds i32* %c, i64 1
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%1 = load i32* %arrayidx1, align 4
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%add2 = add nsw i32 %add, %1
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ret i32 %add2
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}
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