[AMDGPU] Asm/disasm clamp modifier on vop3 int arithmetic
Allow the clamp modifier on vop3 int arithmetic instructions in assembly
and disassembly.
This involved adding a clamp operand to the affected instructions in MIR
and MC, and thus having to fix up several places in codegen and MIR
tests.
Differential Revision: https://reviews.llvm.org/D59267
Change-Id: Ic7775105f02a985b668fa658a0cd7837846a534e
llvm-svn: 356399
diff --git a/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp b/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
index 196ecd7..abd324e 100644
--- a/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
@@ -1092,7 +1092,8 @@
// (NGROUPS.Z * TIDIG.Y + (NGROUPS.X * NGROPUS.Y * TIDIG.X)) + TIDIG.Z
getAddNoCarry(Entry, Insert, DL, TIDReg)
.addReg(TIDReg)
- .addReg(TIDIGZReg);
+ .addReg(TIDIGZReg)
+ .addImm(0); // clamp bit
} else {
// Get the wave id
BuildMI(Entry, Insert, DL, get(AMDGPU::V_MBCNT_LO_U32_B32_e64),
@@ -1117,7 +1118,8 @@
unsigned LDSOffset = MFI->getLDSSize() + (FrameOffset * WorkGroupSize);
getAddNoCarry(MBB, MI, DL, TmpReg)
.addImm(LDSOffset)
- .addReg(TIDReg);
+ .addReg(TIDReg)
+ .addImm(0); // clamp bit
return TmpReg;
}
@@ -4443,6 +4445,7 @@
Inst.RemoveOperand(3);
Inst.setDesc(get(NewOpc));
+ Inst.addOperand(MachineOperand::CreateImm(0)); // clamp bit
Inst.addImplicitDefUseOperands(*MBB.getParent());
MRI.replaceRegWith(OldDstReg, ResultReg);
legalizeOperands(Inst, MDT);
@@ -4703,7 +4706,8 @@
BuildMI(MBB, MII, DL, get(LoOpc), DestSub0)
.addReg(CarryReg, RegState::Define)
.add(SrcReg0Sub0)
- .add(SrcReg1Sub0);
+ .add(SrcReg1Sub0)
+ .addImm(0); // clamp bit
unsigned HiOpc = IsAdd ? AMDGPU::V_ADDC_U32_e64 : AMDGPU::V_SUBB_U32_e64;
MachineInstr *HiHalf =
@@ -4711,7 +4715,8 @@
.addReg(DeadCarryReg, RegState::Define | RegState::Dead)
.add(SrcReg0Sub1)
.add(SrcReg1Sub1)
- .addReg(CarryReg, RegState::Kill);
+ .addReg(CarryReg, RegState::Kill)
+ .addImm(0); // clamp bit
BuildMI(MBB, MII, DL, get(TargetOpcode::REG_SEQUENCE), FullDestReg)
.addReg(DestSub0)