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R600/SI: Fix incorrect encoding of DS_WRITE_B32 instructions

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The SIInsertWaits pass was overwriting the first operand (gds bit) of
DS_WRITE_B32 with the second operand (value to write).  This meant that
any time the value to write was stored in an odd number VGPR, the gds
bit would be set causing the instruction to write to GDS instead of LDS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188522 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard
2013-08-16 01:12:20 +00:00
parent 30d84d8dfa
commit a6a39ced09
4 changed files with 10 additions and 12 deletions
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4
lib/Target/R600/SIInsertWaits.cpp
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@@ -134,9 +134,7 @@ Counters SIInsertWaits::getHwCounts(MachineInstr &MI) {
// LGKM may uses larger values
if (TSFlags & SIInstrFlags::LGKM_CNT) {
MachineOperand &Op = MI.getOperand(0);
if (!Op.isReg())
Op = MI.getOperand(1);
const MachineOperand &Op = MI.getOperand(0);
assert(Op.isReg() && "First LGKM operand must be a register!");
unsigned Reg = Op.getReg();