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AMDGPU/SI: use S_MOV_B64 for larger copies in copyPhysReg

Browse Source 
Reviewers: arsenm, tstellarAMD

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15629

llvm-svn: 256073
This commit is contained in:
Nicolai Haehnle 2015-12-19 01:36:26 +00:00
parent d44890b802
commit 50527c616a
1 changed files with 22 additions and 6 deletions
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28
lib/Target/AMDGPU/SIInstrInfo.cpp
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@ -326,15 +326,31 @@ SIInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
AMDGPU::sub12, AMDGPU::sub13, AMDGPU::sub14, AMDGPU::sub15,
};
static const int16_t Sub0_15_64[] = {
AMDGPU::sub0_sub1, AMDGPU::sub2_sub3,
AMDGPU::sub4_sub5, AMDGPU::sub6_sub7,
AMDGPU::sub8_sub9, AMDGPU::sub10_sub11,
AMDGPU::sub12_sub13, AMDGPU::sub14_sub15,
};
static const int16_t Sub0_7[] = {
AMDGPU::sub0, AMDGPU::sub1, AMDGPU::sub2, AMDGPU::sub3,
AMDGPU::sub4, AMDGPU::sub5, AMDGPU::sub6, AMDGPU::sub7,
};
static const int16_t Sub0_7_64[] = {
AMDGPU::sub0_sub1, AMDGPU::sub2_sub3,
AMDGPU::sub4_sub5, AMDGPU::sub6_sub7,
};
static const int16_t Sub0_3[] = {
AMDGPU::sub0, AMDGPU::sub1, AMDGPU::sub2, AMDGPU::sub3,
};
static const int16_t Sub0_3_64[] = {
AMDGPU::sub0_sub1, AMDGPU::sub2_sub3,
};
static const int16_t Sub0_2[] = {
AMDGPU::sub0, AMDGPU::sub1, AMDGPU::sub2,
};
@ -376,18 +392,18 @@ SIInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
} else if (AMDGPU::SReg_128RegClass.contains(DestReg)) {
assert(AMDGPU::SReg_128RegClass.contains(SrcReg));
Opcode = AMDGPU::S_MOV_B32;
SubIndices = Sub0_3;
Opcode = AMDGPU::S_MOV_B64;
SubIndices = Sub0_3_64;
} else if (AMDGPU::SReg_256RegClass.contains(DestReg)) {
assert(AMDGPU::SReg_256RegClass.contains(SrcReg));
Opcode = AMDGPU::S_MOV_B32;
SubIndices = Sub0_7;
Opcode = AMDGPU::S_MOV_B64;
SubIndices = Sub0_7_64;
} else if (AMDGPU::SReg_512RegClass.contains(DestReg)) {
assert(AMDGPU::SReg_512RegClass.contains(SrcReg));
Opcode = AMDGPU::S_MOV_B32;
SubIndices = Sub0_15;
Opcode = AMDGPU::S_MOV_B64;
SubIndices = Sub0_15_64;
} else if (AMDGPU::VGPR_32RegClass.contains(DestReg)) {
assert(AMDGPU::VGPR_32RegClass.contains(SrcReg) ||