Mesa (master): gallivm: added lp_sizeof_llvm_type()

Brian Paul brianp at kemper.freedesktop.org
Fri May 14 19:24:36 UTC 2010


Module: Mesa
Branch: master
Commit: 11b7c4b1ac0093781f6631c17a5441bea0be93d4
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=11b7c4b1ac0093781f6631c17a5441bea0be93d4

Author: Brian Paul <brianp at vmware.com>
Date:   Fri May 14 13:22:45 2010 -0600

gallivm: added lp_sizeof_llvm_type()

---

 src/gallium/auxiliary/gallivm/lp_bld_type.c |   37 +++++++++++++++++++++++++++
 src/gallium/auxiliary/gallivm/lp_bld_type.h |    4 +++
 2 files changed, 41 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_type.c b/src/gallium/auxiliary/gallivm/lp_bld_type.c
index 37d278d..70ac755 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_type.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_type.c
@@ -239,6 +239,43 @@ lp_wider_type(struct lp_type type)
 
 
 /**
+ * Return the size of the LLVMType in bits.
+ * XXX this function doesn't necessarily handle all LLVM types.
+ */
+unsigned
+lp_sizeof_llvm_type(LLVMTypeRef t)
+{
+   LLVMTypeKind k = LLVMGetTypeKind(t);
+
+   switch (k) {
+   case LLVMIntegerTypeKind:
+      return LLVMGetIntTypeWidth(t);
+   case LLVMFloatTypeKind:
+      return 8 * sizeof(float);
+   case LLVMDoubleTypeKind:
+      return 8 * sizeof(double);
+   case LLVMVectorTypeKind:
+      {
+         LLVMTypeRef elem = LLVMGetElementType(t);
+         unsigned len = LLVMGetVectorSize(t);
+         return len * lp_sizeof_llvm_type(elem);
+      }
+      break;
+   case LLVMArrayTypeKind:
+      {
+         LLVMTypeRef elem = LLVMGetElementType(t);
+         unsigned len = LLVMGetArrayLength(t);
+         return len * lp_sizeof_llvm_type(elem);
+      }
+      break;
+   default:
+      assert(0 && "Unexpected type in lp_get_llvm_type_size()");
+      return 0;
+   }
+}
+
+
+/**
  * Return string name for a LLVMTypeKind.  Useful for debugging.
  */
 const char *
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_type.h b/src/gallium/auxiliary/gallivm/lp_bld_type.h
index b3f9e91..17819d4 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_type.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_type.h
@@ -316,6 +316,10 @@ struct lp_type
 lp_wider_type(struct lp_type type);
 
 
+unsigned
+lp_sizeof_llvm_type(LLVMTypeRef t);
+
+
 const char *
 lp_typekind_name(LLVMTypeKind t);
 




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