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| author | Tom Stellard <thomas.stellard@amd.com> | 2013-05-17 15:23:21 +0000 |
|---|---|---|
| committer | Tom Stellard <thomas.stellard@amd.com> | 2013-05-17 15:23:21 +0000 |
| commit | 0976e3c6d9b1bfaea1267188e6a20dc41318832a (patch) | |
| tree | b7973e3ba190589af3c6e6cf0ea7840c48ae2af7 | |
| parent | 34f533a6c351d8b255810c9b4b8713700e66ee88 (diff) | |
| download | external_llvm-0976e3c6d9b1bfaea1267188e6a20dc41318832a.zip external_llvm-0976e3c6d9b1bfaea1267188e6a20dc41318832a.tar.gz external_llvm-0976e3c6d9b1bfaea1267188e6a20dc41318832a.tar.bz2 | |
R600: Fix encoding for R600 family GPUs
Reviewed-by: Vincent Lejeune <vljn@ovi.com>
https://bugs.freedesktop.org/show_bug.cgi?id=64193
https://bugs.freedesktop.org/show_bug.cgi?id=64257
https://bugs.freedesktop.org/show_bug.cgi?id=64320
NOTE: This is a candidate for the 3.3 branch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182113 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/R600/MCTargetDesc/R600MCCodeEmitter.cpp | 7 | ||||
| -rw-r--r-- | test/CodeGen/R600/r600-encoding.ll | 24 |
2 files changed, 31 insertions, 0 deletions
diff --git a/lib/Target/R600/MCTargetDesc/R600MCCodeEmitter.cpp b/lib/Target/R600/MCTargetDesc/R600MCCodeEmitter.cpp index c5bd01a..cb4cf0c 100644 --- a/lib/Target/R600/MCTargetDesc/R600MCCodeEmitter.cpp +++ b/lib/Target/R600/MCTargetDesc/R600MCCodeEmitter.cpp @@ -179,6 +179,13 @@ void R600MCCodeEmitter::EncodeInstruction(const MCInst &MI, raw_ostream &OS, Emit((u_int32_t) 0, OS); } else { uint64_t Inst = getBinaryCodeForInstr(MI, Fixups); + if ((STI.getFeatureBits() & AMDGPU::FeatureR600ALUInst) && + ((Desc.TSFlags & R600_InstFlag::OP1) || + Desc.TSFlags & R600_InstFlag::OP2)) { + uint64_t ISAOpCode = Inst & (0x3FFULL << 39); + Inst &= ~(0x3FFULL << 39); + Inst |= ISAOpCode << 1; + } Emit(Inst, OS); } } diff --git a/test/CodeGen/R600/r600-encoding.ll b/test/CodeGen/R600/r600-encoding.ll new file mode 100644 index 0000000..c8040a1 --- /dev/null +++ b/test/CodeGen/R600/r600-encoding.ll @@ -0,0 +1,24 @@ +; RUN: llc < %s -march=r600 -show-mc-encoding -mcpu=redwood | FileCheck --check-prefix=EG-CHECK %s +; RUN: llc < %s -march=r600 -show-mc-encoding -mcpu=rs880 | FileCheck --check-prefix=R600-CHECK %s + +; The earliest R600 GPUs have a slightly different encoding than the rest of +; the VLIW4/5 GPUs. + +; EG-CHECK: @test +; EG-CHECK: MUL_IEEE {{[ *TXYZW.,0-9]+}} ; encoding: [{{0x[0-9a-f]+,0x[0-9a-f]+,0x[0-9a-f]+,0x[0-9a-f]+,0x10,0x01,0x[0-9a-f]+,0x[0-9a-f]+}}] + +; R600-CHECK: @test +; R600-CHECK: MUL_IEEE {{[ *TXYZW.,0-9]+}} ; encoding: [{{0x[0-9a-f]+,0x[0-9a-f]+,0x[0-9a-f]+,0x[0-9a-f]+,0x10,0x02,0x[0-9a-f]+,0x[0-9a-f]+}}] + +define void @test() { +entry: + %0 = call float @llvm.R600.load.input(i32 0) + %1 = call float @llvm.R600.load.input(i32 1) + %2 = fmul float %0, %1 + call void @llvm.AMDGPU.store.output(float %2, i32 0) + ret void +} + +declare float @llvm.R600.load.input(i32) readnone + +declare void @llvm.AMDGPU.store.output(float, i32) |