gallivm: Use standard LLVMSetAlignment from LLVM 3.4 onwards.

[mesa.git] / src / gallium / auxiliary / gallivm / lp_bld.h

diff --git a/src/gallium/auxiliary/gallivm/lp_bld.h b/src/gallium/auxiliary/gallivm/lp_bld.h
index 70a4960f913e5c8a6eeae4a0d9d5d703253ad59c..239c27e3c255dc8ab51dc2557947c56fdac81d9a 100644 (file)
--- a/src/gallium/auxiliary/gallivm/lp_bld.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld.h
@@ -35,12 +35,77 @@
 #define LP_BLD_H
 
 
+/**
+ * @file
+ * LLVM IR building helpers interfaces.
+ *
+ * We use LLVM-C bindings for now. They are not documented, but follow the C++
+ * interfaces very closely, and appear to be complete enough for code
+ * genration. See
+ * http://npcontemplation.blogspot.com/2008/06/secret-of-llvm-c-bindings.html
+ * for a standalone example.
+ */
+
 #include <llvm-c/Core.h>  
 
 
-/** Set version to 0 if missing to avoid #ifdef HAVE_LLVM everywhere */
+/** Ensure HAVE_LLVM is set to avoid #ifdef HAVE_LLVM everywhere */
 #ifndef HAVE_LLVM
-#define HAVE_LLVM 0x0207
+#error "HAVE_LLVM should be set with LLVM's version number, e.g. (0x0207 for 2.7)"
+#endif
+#if HAVE_LLVM < 0x303
+#error "LLVM 3.3 or newer required"
+#endif
+
+
+#if HAVE_LLVM <= 0x0303
+/* We won't actually use LLVMMCJITMemoryManagerRef, just create a dummy
+ * typedef to simplify things elsewhere.
+ */
+typedef void *LLVMMCJITMemoryManagerRef;
+#endif
+
+
+/**
+ * Redefine these LLVM entrypoints as invalid macros to make sure we
+ * don't accidentally use them.  We need to use the functions which
+ * take an explicit LLVMContextRef parameter.
+ */
+#define LLVMInt1Type ILLEGAL_LLVM_FUNCTION
+#define LLVMInt8Type ILLEGAL_LLVM_FUNCTION
+#define LLVMInt16Type ILLEGAL_LLVM_FUNCTION
+#define LLVMInt32Type ILLEGAL_LLVM_FUNCTION
+#define LLVMInt64Type ILLEGAL_LLVM_FUNCTION
+#define LLVMIntType ILLEGAL_LLVM_FUNCTION
+#define LLVMFloatType ILLEGAL_LLVM_FUNCTION
+#define LLVMDoubleType ILLEGAL_LLVM_FUNCTION
+#define LLVMX86FP80Type ILLEGAL_LLVM_FUNCTION
+#define LLVMFP128Type ILLEGAL_LLVM_FUNCTION
+#define LLVMPPCFP128Type ILLEGAL_LLVM_FUNCTION
+#define LLVMStructType ILLEGAL_LLVM_FUNCTION
+#define LLVMVoidType ILLEGAL_LLVM_FUNCTION
+#define LLVMLabelType ILLEGAL_LLVM_FUNCTION
+#define LLVMOpaqueType ILLEGAL_LLVM_FUNCTION
+#define LLVMUnionType ILLEGAL_LLVM_FUNCTION
+#define LLVMMDString ILLEGAL_LLVM_FUNCTION
+#define LLVMMDNode ILLEGAL_LLVM_FUNCTION
+#define LLVMConstString ILLEGAL_LLVM_FUNCTION
+#define LLVMConstStruct ILLEGAL_LLVM_FUNCTION
+#define LLVMAppendBasicBlock ILLEGAL_LLVM_FUNCTION
+#define LLVMInsertBasicBlock ILLEGAL_LLVM_FUNCTION
+#define LLVMCreateBuilder ILLEGAL_LLVM_FUNCTION
+
+
+/*
+ * Before LLVM 3.4 LLVMSetAlignment only supported GlobalValue, not
+ * LoadInst/StoreInst as we need.
+ */
+#if HAVE_LLVM < 0x0304
+#  ifdef __cplusplus
+      extern "C"
+#  endif
+   void LLVMSetAlignmentBackport(LLVMValueRef V, unsigned Bytes);
+#  define LLVMSetAlignment LLVMSetAlignmentBackport
 #endif