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draw,llvmpipe: Avoid named struct types on LLVM 3.0 and later.

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Starting with LLVM 3.0, named structures are meant not for debugging, but
for recursive data types, previously also known as opaque types.

The recursive nature of these types leads to several memory management
difficulties.  Given that we don't actually need recursive types, avoid
them altogether.

This is an attempt to address fdo bugs 41791 and 44466. The issue is
somewhat random so there's no easy way to check how effective this is.
This commit is contained in:
José Fonseca 2012-05-16 15:00:23 +01:00
parent 982df3c1a5
commit 9af1ba565d
2 changed files with 6 additions and 30 deletions
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24
src/gallium/auxiliary/draw/draw_llvm.c
View file

@ -123,14 +123,10 @@ create_jit_texture_type(struct gallivm_state *gallivm, const char *struct_name)
elem_types[DRAW_JIT_TEXTURE_BORDER_COLOR] =
LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4);
#if HAVE_LLVM >= 0x0300
texture_type = LLVMStructCreateNamed(gallivm->context, struct_name);
LLVMStructSetBody(texture_type, elem_types,
Elements(elem_types), 0);
#else
texture_type = LLVMStructTypeInContext(gallivm->context, elem_types,
Elements(elem_types), 0);
#if HAVE_LLVM < 0x0300
LLVMAddTypeName(gallivm->module, struct_name, texture_type);
/* Make sure the target's struct layout cache doesn't return
@ -201,13 +197,9 @@ create_jit_context_type(struct gallivm_state *gallivm,
elem_types[3] = LLVMPointerType(float_type, 0); /* viewport */
elem_types[4] = LLVMArrayType(texture_type,
PIPE_MAX_VERTEX_SAMPLERS); /* textures */
#if HAVE_LLVM >= 0x0300
context_type = LLVMStructCreateNamed(gallivm->context, struct_name);
LLVMStructSetBody(context_type, elem_types,
Elements(elem_types), 0);
#else
context_type = LLVMStructTypeInContext(gallivm->context, elem_types,
Elements(elem_types), 0);
#if HAVE_LLVM < 0x0300
LLVMAddTypeName(gallivm->module, struct_name, context_type);
LLVMInvalidateStructLayout(gallivm->target, context_type);
@ -244,13 +236,9 @@ create_jit_vertex_buffer_type(struct gallivm_state *gallivm, const char *struct_
elem_types[2] =
elem_types[3] = LLVMPointerType(LLVMInt8TypeInContext(gallivm->context), 0); /* vs_constants */
#if HAVE_LLVM >= 0x0300
vb_type = LLVMStructCreateNamed(gallivm->context, struct_name);
LLVMStructSetBody(vb_type, elem_types,
Elements(elem_types), 0);
#else
vb_type = LLVMStructTypeInContext(gallivm->context, elem_types,
Elements(elem_types), 0);
#if HAVE_LLVM < 0x0300
LLVMAddTypeName(gallivm->module, struct_name, vb_type);
LLVMInvalidateStructLayout(gallivm->target, vb_type);
@ -285,13 +273,9 @@ create_jit_vertex_header(struct gallivm_state *gallivm, int data_elems)
elem_types[DRAW_JIT_VERTEX_PRE_CLIP_POS] = LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4);
elem_types[DRAW_JIT_VERTEX_DATA] = LLVMArrayType(elem_types[1], data_elems);
#if HAVE_LLVM >= 0x0300
vertex_header = LLVMStructCreateNamed(gallivm->context, struct_name);
LLVMStructSetBody(vertex_header, elem_types,
Elements(elem_types), 0);
#else
vertex_header = LLVMStructTypeInContext(gallivm->context, elem_types,
Elements(elem_types), 0);
#if HAVE_LLVM < 0x0300
LLVMAddTypeName(gallivm->module, struct_name, vertex_header);
LLVMInvalidateStructLayout(gallivm->target, vertex_header);

12
src/gallium/drivers/llvmpipe/lp_jit.c
View file

@ -68,13 +68,9 @@ lp_jit_create_types(struct llvmpipe_context *lp)
elem_types[LP_JIT_TEXTURE_BORDER_COLOR] =
LLVMArrayType(LLVMFloatTypeInContext(lc), 4);
#if HAVE_LLVM >= 0x0300
texture_type = LLVMStructCreateNamed(gallivm->context, "texture");
LLVMStructSetBody(texture_type, elem_types,
Elements(elem_types), 0);
#else
texture_type = LLVMStructTypeInContext(lc, elem_types,
Elements(elem_types), 0);
#if HAVE_LLVM < 0x0300
LLVMAddTypeName(gallivm->module, "texture", texture_type);
LLVMInvalidateStructLayout(gallivm->target, texture_type);
@ -134,14 +130,10 @@ lp_jit_create_types(struct llvmpipe_context *lp)
elem_types[LP_JIT_CTX_TEXTURES] = LLVMArrayType(texture_type,
PIPE_MAX_SAMPLERS);
#if HAVE_LLVM >= 0x0300
context_type = LLVMStructCreateNamed(gallivm->context, "context");
LLVMStructSetBody(context_type, elem_types,
Elements(elem_types), 0);
#else
context_type = LLVMStructTypeInContext(lc, elem_types,
Elements(elem_types), 0);
#if HAVE_LLVM < 0x0300
LLVMInvalidateStructLayout(gallivm->target, context_type);
LLVMAddTypeName(gallivm->module, "context", context_type);