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c147c1b994
Expand copy instructions between two accumulator registers before callee-saved scan is done. Handle copies between integer GPR and hi/lo registers in MipsSEInstrInfo::copyPhysReg. Delete pseudo-copy instructions that are not needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180827 91177308-0d34-0410-b5e6-96231b3b80d8
22 lines
589 B
LLVM
22 lines
589 B
LLVM
; RUN: llc -march=mipsel -mattr=+dsp < %s
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@g1 = common global i64 0, align 8
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@g2 = common global i64 0, align 8
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@g3 = common global i64 0, align 8
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define i64 @test_acreg_copy(i32 %a0, i32 %a1, i32 %a2, i32 %a3) {
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entry:
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%0 = load i64* @g1, align 8
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%1 = tail call i64 @llvm.mips.maddu(i64 %0, i32 %a0, i32 %a1)
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%2 = tail call i64 @llvm.mips.maddu(i64 %0, i32 %a2, i32 %a3)
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store i64 %1, i64* @g1, align 8
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store i64 %2, i64* @g2, align 8
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tail call void @foo1()
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store i64 %2, i64* @g3, align 8
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ret i64 %1
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}
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declare i64 @llvm.mips.maddu(i64, i32, i32)
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declare void @foo1()
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