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| author | Akira Hatanaka <ahatanaka@mips.com> | 2013-04-30 23:22:09 +0000 |
|---|---|---|
| committer | Akira Hatanaka <ahatanaka@mips.com> | 2013-04-30 23:22:09 +0000 |
| commit | c147c1b994e1187cb471cdb7ee05f5f875eff4e0 (patch) | |
| tree | cb8374bc211e2f08f526dd29e1e24c1ca05161db /test/CodeGen/Mips/spill-copy-acreg.ll | |
| parent | 3484da9479a4daff3efc7febe004e1f4d69b3b4a (diff) | |
| download | llvm-c147c1b994e1187cb471cdb7ee05f5f875eff4e0.tar.gz llvm-c147c1b994e1187cb471cdb7ee05f5f875eff4e0.tar.bz2 llvm-c147c1b994e1187cb471cdb7ee05f5f875eff4e0.tar.xz | |
[mips] Fix handling of instructions which copy to/from accumulator registers.
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
Diffstat (limited to 'test/CodeGen/Mips/spill-copy-acreg.ll')
| -rw-r--r-- | test/CodeGen/Mips/spill-copy-acreg.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/CodeGen/Mips/spill-copy-acreg.ll b/test/CodeGen/Mips/spill-copy-acreg.ll new file mode 100644 index 0000000000..2ca031a104 --- /dev/null +++ b/test/CodeGen/Mips/spill-copy-acreg.ll @@ -0,0 +1,21 @@ +; RUN: llc -march=mipsel -mattr=+dsp < %s + +@g1 = common global i64 0, align 8 +@g2 = common global i64 0, align 8 +@g3 = common global i64 0, align 8 + +define i64 @test_acreg_copy(i32 %a0, i32 %a1, i32 %a2, i32 %a3) { +entry: + %0 = load i64* @g1, align 8 + %1 = tail call i64 @llvm.mips.maddu(i64 %0, i32 %a0, i32 %a1) + %2 = tail call i64 @llvm.mips.maddu(i64 %0, i32 %a2, i32 %a3) + store i64 %1, i64* @g1, align 8 + store i64 %2, i64* @g2, align 8 + tail call void @foo1() + store i64 %2, i64* @g3, align 8 + ret i64 %1 +} + +declare i64 @llvm.mips.maddu(i64, i32, i32) + +declare void @foo1() |