radeonsi: Added Diag Handler to receive LLVM Error messages

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

1 files changed, 44 insertions, 6 deletions

diff --git a/src/gallium/drivers/radeon/radeon_llvm_emit.c b/src/gallium/drivers/radeon/radeon_llvm_emit.c
index 7bcdc2756f0..891781f6c83 100644
--- a/src/gallium/drivers/radeon/radeon_llvm_emit.c
+++ b/src/gallium/drivers/radeon/radeon_llvm_emit.c
@@ -29,6 +29,7 @@
 
 #include <llvm-c/Target.h>
 #include <llvm-c/TargetMachine.h>
+#include <llvm-c/Core.h>
 
 #include <stdlib.h>
 #include <stdio.h>
@@ -79,6 +80,22 @@ static LLVMTargetRef get_r600_target() {
 	return target;
 }
 
+#if HAVE_LLVM >= 0x0305
+
+static void radeonDiagnosticHandler(LLVMDiagnosticInfoRef di, void *context) {
+	unsigned int *diagnosticflag;
+	char *diaginfo_message;
+
+	diaginfo_message = LLVMGetDiagInfoDescription(di);
+	fprintf(stderr,"LLVM triggered Diagnostic Handler: %s\n", diaginfo_message);
+	LLVMDisposeMessage(diaginfo_message);
+
+	diagnosticflag = (unsigned int *)context;
+	*diagnosticflag = ((LLVMDSError == LLVMGetDiagInfoSeverity(di)) ? 1 : 0);
+}
+
+#endif
+
 /**
  * Compile an LLVM module to machine code.
  *
@@ -92,12 +109,15 @@ unsigned radeon_llvm_compile(LLVMModuleRef M, struct radeon_shader_binary *binar
 	char cpu[CPU_STRING_LEN];
 	char fs[FS_STRING_LEN];
 	char *err;
+	LLVMContextRef llvm_ctx;
+	unsigned rval = 0;
 	LLVMMemoryBufferRef out_buffer;
 	unsigned buffer_size;
 	const char *buffer_data;
 	char triple[TRIPLE_STRING_LEN];
-	LLVMBool r;
+	LLVMBool mem_err;
 
+	/* initialise */
 	init_r600_target();
 
 	target = get_r600_target();
@@ -112,24 +132,42 @@ unsigned radeon_llvm_compile(LLVMModuleRef M, struct radeon_shader_binary *binar
 		strncpy(fs, "+DumpCode", FS_STRING_LEN);
 	}
 	strncpy(triple, "r600--", TRIPLE_STRING_LEN);
+
+	/* Setup Diagnostic Handler*/
+	llvm_ctx = LLVMGetModuleContext(M);
+
+#if HAVE_LLVM >= 0x0305
+	LLVMContextSetDiagnosticHandler(llvm_ctx, radeonDiagnosticHandler, &rval);
+#endif
+	rval = 0;
+
+	/* Compile IR*/
 	tm = LLVMCreateTargetMachine(target, triple, cpu, fs,
 				  LLVMCodeGenLevelDefault, LLVMRelocDefault,
 						  LLVMCodeModelDefault);
-
-	r = LLVMTargetMachineEmitToMemoryBuffer(tm, M, LLVMObjectFile, &err,
+	mem_err = LLVMTargetMachineEmitToMemoryBuffer(tm, M, LLVMObjectFile, &err,
 								 &out_buffer);
-	if (r) {
-		fprintf(stderr, "%s", err);
+
+	/* Process Errors/Warnings */
+	if (mem_err) {
+		fprintf(stderr, "%s: %s", __FUNCTION__, err);
 		FREE(err);
+		LLVMDisposeTargetMachine(tm);
 		return 1;
 	}
 
+	if (0 != rval) {
+		fprintf(stderr, "%s: Processing Diag Flag\n", __FUNCTION__);
+	}
+
+	/* Extract Shader Code*/
 	buffer_size = LLVMGetBufferSize(out_buffer);
 	buffer_data = LLVMGetBufferStart(out_buffer);
 
 	radeon_elf_read(buffer_data, buffer_size, binary, dump);
 
+	/* Clean up */
 	LLVMDisposeMemoryBuffer(out_buffer);
 	LLVMDisposeTargetMachine(tm);
-	return 0;
+	return rval;
 }