amd/common: move ac_build_phi from radeonsi

Reviewed-by: Marek Olšák <[email protected]>

2 files changed, 19 insertions, 0 deletions

diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
index 71468df2dbc..51fb009be8b 100644
--- a/src/amd/common/ac_llvm_build.c
+++ b/src/amd/common/ac_llvm_build.c
@@ -252,6 +252,20 @@ void ac_build_type_name_for_intr(LLVMTypeRef type, char *buf, unsigned bufsize)
 	}
 }
 
+/**
+ * Helper function that builds an LLVM IR PHI node and immediately adds
+ * incoming edges.
+ */
+LLVMValueRef
+ac_build_phi(struct ac_llvm_context *ctx, LLVMTypeRef type,
+	     unsigned count_incoming, LLVMValueRef *values,
+	     LLVMBasicBlockRef *blocks)
+{
+	LLVMValueRef phi = LLVMBuildPhi(ctx->builder, type, "");
+	LLVMAddIncoming(phi, values, blocks, count_incoming);
+	return phi;
+}
+
 /* Prevent optimizations (at least of memory accesses) across the current
  * point in the program by emitting empty inline assembly that is marked as
  * having side effects.
diff --git a/src/amd/common/ac_llvm_build.h b/src/amd/common/ac_llvm_build.h
index 3f93551330c..1d6dc0ab2f5 100644
--- a/src/amd/common/ac_llvm_build.h
+++ b/src/amd/common/ac_llvm_build.h
@@ -85,6 +85,11 @@ ac_build_intrinsic(struct ac_llvm_context *ctx, const char *name,
 
 void ac_build_type_name_for_intr(LLVMTypeRef type, char *buf, unsigned bufsize);
 
+LLVMValueRef
+ac_build_phi(struct ac_llvm_context *ctx, LLVMTypeRef type,
+	     unsigned count_incoming, LLVMValueRef *values,
+	     LLVMBasicBlockRef *blocks);
+
 void ac_build_optimization_barrier(struct ac_llvm_context *ctx,
 				   LLVMValueRef *pvgpr);