#endif
#include <llvm-c/Core.h>
+#if HAVE_LLVM >= 0x0306
+#include <llvm-c/Support.h>
+#endif
#include <llvm-c/ExecutionEngine.h>
#include <llvm/Target/TargetOptions.h>
#include <llvm/ExecutionEngine/ExecutionEngine.h>
#include "util/u_cpu_detect.h"
#include "lp_bld_misc.h"
+#include "lp_bld_debug.h"
namespace {
llvm::InitializeNativeTargetAsmPrinter();
llvm::InitializeNativeTargetDisassembler();
-}
-
-/**
- * The llvm target registry is not thread-safe, so drivers and state-trackers
- * that want to initialize targets should use the gallivm_init_llvm_targets()
- * function to safely initialize targets.
- *
- * LLVM targets should be initialized before the driver or state-tracker tries
- * to access the registry.
- */
-extern "C" void
-gallivm_init_llvm_targets(void)
-{
- call_once(&init_native_targets_once_flag, init_native_targets);
+#if DEBUG && HAVE_LLVM >= 0x0306
+ {
+ char *env_llc_options = getenv("GALLIVM_LLC_OPTIONS");
+ if (env_llc_options) {
+ char *option;
+ char *options[64] = {(char *) "llc"}; // Warning without cast
+ int n;
+ for (n = 0, option = strtok(env_llc_options, " "); option; n++, option = strtok(NULL, " ")) {
+ options[n + 1] = option;
+ }
+ if (gallivm_debug & (GALLIVM_DEBUG_IR | GALLIVM_DEBUG_ASM | GALLIVM_DEBUG_DUMP_BC)) {
+ debug_printf("llc additional options (%d):\n", n);
+ for (int i = 1; i <= n; i++)
+ debug_printf("\t%s\n", options[i]);
+ debug_printf("\n");
+ }
+ LLVMParseCommandLineOptions(n + 1, options, NULL);
+ }
+ }
+#endif
}
extern "C" void
llvm::DisablePrettyStackTrace = true;
#endif
- gallivm_init_llvm_targets();
+ /* The llvm target registry is not thread-safe, so drivers and state-trackers
+ * that want to initialize targets should use the lp_set_target_options()
+ * function to safely initialize targets.
+ *
+ * LLVM targets should be initialized before the driver or state-tracker tries
+ * to access the registry.
+ */
+ call_once(&init_native_targets_once_flag, init_native_targets);
}
extern "C"
virtual void registerEHFrames(uint8_t *Addr, uint64_t LoadAddr, size_t Size) {
mgr()->registerEHFrames(Addr, LoadAddr, Size);
}
- virtual void deregisterEHFrames(uint8_t *Addr, uint64_t LoadAddr, size_t Size) {
- mgr()->deregisterEHFrames(Addr, LoadAddr, Size);
- }
#else
virtual void registerEHFrames(llvm::StringRef SectionData) {
mgr()->registerEHFrames(SectionData);
}
+#endif
+#if HAVE_LLVM >= 0x0500
+ virtual void deregisterEHFrames() {
+ mgr()->deregisterEHFrames();
+ }
+#elif HAVE_LLVM >= 0x0304
+ virtual void deregisterEHFrames(uint8_t *Addr, uint64_t LoadAddr, size_t Size) {
+ mgr()->deregisterEHFrames(Addr, LoadAddr, Size);
+ }
#endif
virtual void *getPointerToNamedFunction(const std::string &Name,
bool AbortOnFailure=true) {
#if defined(PIPE_ARCH_PPC)
MAttrs.push_back(util_cpu_caps.has_altivec ? "+altivec" : "-altivec");
-#if HAVE_LLVM >= 0x0304
+#if (HAVE_LLVM >= 0x0304)
+#if (HAVE_LLVM < 0x0400)
/*
* Make sure VSX instructions are disabled
- * See LLVM bug https://llvm.org/bugs/show_bug.cgi?id=25503#c7
+ * See LLVM bugs:
+ * https://llvm.org/bugs/show_bug.cgi?id=25503#c7 (fixed in 3.8.1)
+ * https://llvm.org/bugs/show_bug.cgi?id=26775 (fixed in 3.8.1)
+ * https://llvm.org/bugs/show_bug.cgi?id=33531 (fixed in 4.0)
+ * https://llvm.org/bugs/show_bug.cgi?id=34647 (llc performance on certain unusual shader IR; intro'd in 4.0, pending as of 5.0)
*/
if (util_cpu_caps.has_altivec) {
MAttrs.push_back("-vsx");
}
+#else
+ /*
+ * Bug 25503 is fixed, by the same fix that fixed
+ * bug 26775, in versions of LLVM later than 3.8 (starting with 3.8.1).
+ * BZ 33531 actually comprises more than one bug, all of
+ * which are fixed in LLVM 4.0.
+ *
+ * With LLVM 4.0 or higher:
+ * Make sure VSX instructions are ENABLED (if supported), unless
+ * VSX instructions are explicitly enabled/disabled via GALLIVM_VSX=1 or 0.
+ */
+ if (util_cpu_caps.has_altivec) {
+ MAttrs.push_back(util_cpu_caps.has_vsx ? "+vsx" : "-vsx");
+ }
+#endif
#endif
#endif
builder.setMAttrs(MAttrs);
+ if (gallivm_debug & (GALLIVM_DEBUG_IR | GALLIVM_DEBUG_ASM | GALLIVM_DEBUG_DUMP_BC)) {
+ int n = MAttrs.size();
+ if (n > 0) {
+ debug_printf("llc -mattr option(s): ");
+ for (int i = 0; i < n; i++)
+ debug_printf("%s%s", MAttrs[i].c_str(), (i < n - 1) ? "," : "");
+ debug_printf("\n");
+ }
+ }
+
#if HAVE_LLVM >= 0x0305
StringRef MCPU = llvm::sys::getHostCPUName();
/*
* when not using MCJIT so no instructions are generated which the old JIT
* can't handle. Not entirely sure if we really need to do anything yet.
*/
+#if defined(PIPE_ARCH_LITTLE_ENDIAN) && defined(PIPE_ARCH_PPC_64)
+ /*
+ * Versions of LLVM prior to 4.0 lacked a table entry for "POWER8NVL",
+ * resulting in (big-endian) "generic" being returned on
+ * little-endian Power8NVL systems. The result was that code that
+ * attempted to load the least significant 32 bits of a 64-bit quantity
+ * from memory loaded the wrong half. This resulted in failures in some
+ * Piglit tests, e.g.
+ * .../arb_gpu_shader_fp64/execution/conversion/frag-conversion-explicit-double-uint
+ */
+ if (MCPU == "generic")
+ MCPU = "pwr8";
+#endif
builder.setMCPU(MCPU);
+ if (gallivm_debug & (GALLIVM_DEBUG_IR | GALLIVM_DEBUG_ASM | GALLIVM_DEBUG_DUMP_BC)) {
+ debug_printf("llc -mcpu option: %s\n", MCPU.str().c_str());
+ }
#endif
ShaderMemoryManager *MM = NULL;
delete reinterpret_cast<BaseMemoryManager*>(memorymgr);
}
-extern "C" void
-lp_add_attr_dereferenceable(LLVMValueRef val, uint64_t bytes)
-{
-#if HAVE_LLVM >= 0x0306
- llvm::Argument *A = llvm::unwrap<llvm::Argument>(val);
- llvm::AttrBuilder B;
- B.addDereferenceableAttr(bytes);
- A->addAttr(llvm::AttributeSet::get(A->getContext(), A->getArgNo() + 1, B));
-#endif
-}
-
extern "C" LLVMValueRef
lp_get_called_value(LLVMValueRef call)
{
return llvm::isa<llvm::Function>(llvm::unwrap(v));
#endif
}
-
-extern "C" LLVMBuilderRef
-lp_create_builder(LLVMContextRef ctx, bool unsafe_fpmath)
-{
- LLVMBuilderRef builder = LLVMCreateBuilderInContext(ctx);
-
-#if HAVE_LLVM >= 0x0308
- if (unsafe_fpmath) {
- llvm::FastMathFlags flags;
- flags.setUnsafeAlgebra();
- llvm::unwrap(builder)->setFastMathFlags(flags);
- }
-#endif
-
- return builder;
-}