[AMDGPU] Choose VMCNT, EXPCNT, LGKMCNT masks and shifts based on the isa version

Differential Revision: https://reviews.llvm.org/D24973

llvm-svn: 282877

2 files changed, 42 insertions, 0 deletions

diff --git a/llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp b/llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp
index 51b56e04e52..9be0e298ca5 100644
--- a/llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp
@@ -152,6 +152,30 @@ std::pair<int, int> getIntegerPairAttribute(const Function &F,
   return Ints;
 }
 
+unsigned getVmcntMask(IsaVersion Version) {
+  return 0xf;
+}
+
+unsigned getVmcntShift(IsaVersion Version) {
+  return 0;
+}
+
+unsigned getExpcntMask(IsaVersion Version) {
+  return 0x7;
+}
+
+unsigned getExpcntShift(IsaVersion Version) {
+  return 4;
+}
+
+unsigned getLgkmcntMask(IsaVersion Version) {
+  return 0xf;
+}
+
+unsigned getLgkmcntShift(IsaVersion Version) {
+  return 8;
+}
+
 unsigned getInitialPSInputAddr(const Function &F) {
   return getIntegerAttribute(F, "InitialPSInputAddr", 0);
 }
diff --git a/llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h b/llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h
index 1b8b8a07302..72fd797b06d 100644
--- a/llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h
+++ b/llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h
@@ -69,6 +69,24 @@ std::pair<int, int> getIntegerPairAttribute(const Function &F,
                                             std::pair<int, int> Default,
                                             bool OnlyFirstRequired = false);
 
+/// \returns VMCNT bit mask for given isa \p Version.
+unsigned getVmcntMask(IsaVersion Version);
+
+/// \returns VMCNT bit shift for given isa \p Version.
+unsigned getVmcntShift(IsaVersion Version);
+
+/// \returns EXPCNT bit mask for given isa \p Version.
+unsigned getExpcntMask(IsaVersion Version);
+
+/// \returns EXPCNT bit shift for given isa \p Version.
+unsigned getExpcntShift(IsaVersion Version);
+
+/// \returns LGKMCNT bit mask for given isa \p Version.
+unsigned getLgkmcntMask(IsaVersion Version);
+
+/// \returns LGKMCNT bit shift for given isa \p Version.
+unsigned getLgkmcntShift(IsaVersion Version);
+
 unsigned getInitialPSInputAddr(const Function &F);
 
 bool isShader(CallingConv::ID cc);