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author | Tom Stellard <thomas.stellard@amd.com> | 2013-01-23 02:09:06 +0000 |
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committer | Tom Stellard <thomas.stellard@amd.com> | 2013-01-23 02:09:06 +0000 |
commit | 9f7818d9bdfce2e9c7a2cbe31490a135aa6d1211 (patch) | |
tree | 31e05a5bfa8a0ff244b3d281a107be0bb71effbb /lib/Target/R600/InstPrinter/AMDGPUInstPrinter.cpp | |
parent | c7e1888d93f4cb2982266986f3af7e99df631fa1 (diff) | |
download | external_llvm-9f7818d9bdfce2e9c7a2cbe31490a135aa6d1211.zip external_llvm-9f7818d9bdfce2e9c7a2cbe31490a135aa6d1211.tar.gz external_llvm-9f7818d9bdfce2e9c7a2cbe31490a135aa6d1211.tar.bz2 |
R600: rework handling of the constants
Remove Cxxx registers, add new special register - "ALU_CONST" and new
operand for each alu src - "sel". ALU_CONST is used to designate that the
new operand contains the value to override src.sel, src.kc_bank, src.chan
for constants in the driver.
Patch by: Vadim Girlin
Vincent Lejeune:
- Use pointers for constants
- Fold CONST_ADDRESS when possible
Tom Stellard:
- Give CONSTANT_BUFFER_0 its own address space
- Use integer types for constant loads
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173222 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/R600/InstPrinter/AMDGPUInstPrinter.cpp')
-rw-r--r-- | lib/Target/R600/InstPrinter/AMDGPUInstPrinter.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/Target/R600/InstPrinter/AMDGPUInstPrinter.cpp b/lib/Target/R600/InstPrinter/AMDGPUInstPrinter.cpp index e6c550b..e76c6c8 100644 --- a/lib/Target/R600/InstPrinter/AMDGPUInstPrinter.cpp +++ b/lib/Target/R600/InstPrinter/AMDGPUInstPrinter.cpp @@ -129,4 +129,28 @@ void AMDGPUInstPrinter::printWrite(const MCInst *MI, unsigned OpNo, } } +void AMDGPUInstPrinter::printSel(const MCInst *MI, unsigned OpNo, + raw_ostream &O) { + const char * chans = "XYZW"; + int sel = MI->getOperand(OpNo).getImm(); + + int chan = sel & 3; + sel >>= 2; + + if (sel >= 512) { + sel -= 512; + int cb = sel >> 12; + sel &= 4095; + O << cb << "[" << sel << "]"; + } else if (sel >= 448) { + sel -= 448; + O << sel; + } else if (sel >= 0){ + O << sel; + } + + if (sel >= 0) + O << "." << chans[chan]; +} + #include "AMDGPUGenAsmWriter.inc" |