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gallivm: Helper functions for pointer indirection.

This commit is contained in:
José Fonseca 2010-09-03 11:53:48 +01:00
parent 225530f1f2
commit c0d41d0404
2 changed files with 56 additions and 0 deletions
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39
src/gallium/auxiliary/gallivm/lp_bld_struct.c
View File

@ -49,6 +49,8 @@ lp_build_struct_get_ptr(LLVMBuilderRef builder,
{
LLVMValueRef indices[2];
LLVMValueRef member_ptr;
assert(LLVMGetTypeKind(LLVMTypeOf(ptr)) == LLVMPointerTypeKind);
assert(LLVMGetTypeKind(LLVMGetElementType(LLVMTypeOf(ptr))) == LLVMStructTypeKind);
indices[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
indices[1] = LLVMConstInt(LLVMInt32Type(), member, 0);
member_ptr = LLVMBuildGEP(builder, ptr, indices, Elements(indices), "");
@ -65,6 +67,8 @@ lp_build_struct_get(LLVMBuilderRef builder,
{
LLVMValueRef member_ptr;
LLVMValueRef res;
assert(LLVMGetTypeKind(LLVMTypeOf(ptr)) == LLVMPointerTypeKind);
assert(LLVMGetTypeKind(LLVMGetElementType(LLVMTypeOf(ptr))) == LLVMStructTypeKind);
member_ptr = lp_build_struct_get_ptr(builder, ptr, member, name);
res = LLVMBuildLoad(builder, member_ptr, "");
lp_build_name(res, "%s.%s", LLVMGetValueName(ptr), name);
@ -79,6 +83,8 @@ lp_build_array_get_ptr(LLVMBuilderRef builder,
{
LLVMValueRef indices[2];
LLVMValueRef element_ptr;
assert(LLVMGetTypeKind(LLVMTypeOf(ptr)) == LLVMPointerTypeKind);
assert(LLVMGetTypeKind(LLVMGetElementType(LLVMTypeOf(ptr))) == LLVMArrayTypeKind);
indices[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
indices[1] = index;
element_ptr = LLVMBuildGEP(builder, ptr, indices, Elements(indices), "");
@ -97,6 +103,8 @@ lp_build_array_get(LLVMBuilderRef builder,
{
LLVMValueRef element_ptr;
LLVMValueRef res;
assert(LLVMGetTypeKind(LLVMTypeOf(ptr)) == LLVMPointerTypeKind);
assert(LLVMGetTypeKind(LLVMGetElementType(LLVMTypeOf(ptr))) == LLVMArrayTypeKind);
element_ptr = lp_build_array_get_ptr(builder, ptr, index);
res = LLVMBuildLoad(builder, element_ptr, "");
#ifdef DEBUG
@ -113,6 +121,37 @@ lp_build_array_set(LLVMBuilderRef builder,
LLVMValueRef value)
{
LLVMValueRef element_ptr;
assert(LLVMGetTypeKind(LLVMTypeOf(ptr)) == LLVMPointerTypeKind);
assert(LLVMGetTypeKind(LLVMGetElementType(LLVMTypeOf(ptr))) == LLVMArrayTypeKind);
element_ptr = lp_build_array_get_ptr(builder, ptr, index);
LLVMBuildStore(builder, value, element_ptr);
}
LLVMValueRef
lp_build_pointer_get(LLVMBuilderRef builder,
LLVMValueRef ptr,
LLVMValueRef index)
{
LLVMValueRef element_ptr;
LLVMValueRef res;
assert(LLVMGetTypeKind(LLVMTypeOf(ptr)) == LLVMPointerTypeKind);
element_ptr = LLVMBuildGEP(builder, ptr, &index, 1, "");
res = LLVMBuildLoad(builder, element_ptr, "");
#ifdef DEBUG
lp_build_name(res, "%s[%s]", LLVMGetValueName(ptr), LLVMGetValueName(index));
#endif
return res;
}
void
lp_build_pointer_set(LLVMBuilderRef builder,
LLVMValueRef ptr,
LLVMValueRef index,
LLVMValueRef value)
{
LLVMValueRef element_ptr;
element_ptr = LLVMBuildGEP(builder, ptr, &index, 1, "");
LLVMBuildStore(builder, value, element_ptr);
}

17
src/gallium/auxiliary/gallivm/lp_bld_struct.h
View File

@ -96,4 +96,21 @@ lp_build_array_set(LLVMBuilderRef builder,
LLVMValueRef index,
LLVMValueRef value);
/**
* Get the value of an array element.
*/
LLVMValueRef
lp_build_pointer_get(LLVMBuilderRef builder,
LLVMValueRef ptr,
LLVMValueRef index);
/**
* Set the value of an array element.
*/
void
lp_build_pointer_set(LLVMBuilderRef builder,
LLVMValueRef ptr,
LLVMValueRef index,
LLVMValueRef value);
#endif /* !LP_BLD_STRUCT_H */