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1 /*
2  * Copyright 2014 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the
6  * "Software"), to deal in the Software without restriction, including
7  * without limitation the rights to use, copy, modify, merge, publish,
8  * distribute, sub license, and/or sell copies of the Software, and to
9  * permit persons to whom the Software is furnished to do so, subject to
10  * the following conditions:
11  *
12  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
15  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
16  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
17  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
18  * USE OR OTHER DEALINGS IN THE SOFTWARE.
19  *
20  * The above copyright notice and this permission notice (including the
21  * next paragraph) shall be included in all copies or substantial portions
22  * of the Software.
23  *
24  */
25 
26 /* based on Marek's patch to lp_bld_misc.cpp */
27 
28 // Workaround http://llvm.org/PR23628
29 #pragma push_macro("DEBUG")
30 #undef DEBUG
31 
32 #include "ac_llvm_util.h"
33 #include <llvm-c/Core.h>
34 #include <llvm/Target/TargetOptions.h>
35 #include <llvm/ExecutionEngine/ExecutionEngine.h>
36 #include <llvm/IR/Attributes.h>
37 #include <llvm/IR/CallSite.h>
38 #include <llvm/IR/IRBuilder.h>
39 
40 #if HAVE_LLVM < 0x0500
41 namespace llvm {
42 typedef AttributeSet AttributeList;
43 }
44 #endif
45 
ac_add_attr_dereferenceable(LLVMValueRef val,uint64_t bytes)46 void ac_add_attr_dereferenceable(LLVMValueRef val, uint64_t bytes)
47 {
48    llvm::Argument *A = llvm::unwrap<llvm::Argument>(val);
49 #if HAVE_LLVM < 0x0500
50    llvm::AttrBuilder B;
51    B.addDereferenceableAttr(bytes);
52    A->addAttr(llvm::AttributeList::get(A->getContext(), A->getArgNo() + 1,  B));
53 #else
54    A->addAttr(llvm::Attribute::getWithDereferenceableBytes(A->getContext(), bytes));
55 #endif
56 }
57 
ac_is_sgpr_param(LLVMValueRef arg)58 bool ac_is_sgpr_param(LLVMValueRef arg)
59 {
60 	llvm::Argument *A = llvm::unwrap<llvm::Argument>(arg);
61 	llvm::AttributeList AS = A->getParent()->getAttributes();
62 	unsigned ArgNo = A->getArgNo();
63 	return AS.hasAttribute(ArgNo + 1, llvm::Attribute::ByVal) ||
64 	       AS.hasAttribute(ArgNo + 1, llvm::Attribute::InReg);
65 }
66 
ac_llvm_get_called_value(LLVMValueRef call)67 LLVMValueRef ac_llvm_get_called_value(LLVMValueRef call)
68 {
69 #if HAVE_LLVM >= 0x0309
70 	return LLVMGetCalledValue(call);
71 #else
72 	return llvm::wrap(llvm::CallSite(llvm::unwrap<llvm::Instruction>(call)).getCalledValue());
73 #endif
74 }
75 
ac_llvm_is_function(LLVMValueRef v)76 bool ac_llvm_is_function(LLVMValueRef v)
77 {
78 #if HAVE_LLVM >= 0x0309
79 	return LLVMGetValueKind(v) == LLVMFunctionValueKind;
80 #else
81 	return llvm::isa<llvm::Function>(llvm::unwrap(v));
82 #endif
83 }
84 
ac_create_builder(LLVMContextRef ctx,enum ac_float_mode float_mode)85 LLVMBuilderRef ac_create_builder(LLVMContextRef ctx,
86 				 enum ac_float_mode float_mode)
87 {
88 	LLVMBuilderRef builder = LLVMCreateBuilderInContext(ctx);
89 
90 #if HAVE_LLVM >= 0x0308
91 	llvm::FastMathFlags flags;
92 
93 	switch (float_mode) {
94 	case AC_FLOAT_MODE_DEFAULT:
95 		break;
96 	case AC_FLOAT_MODE_NO_SIGNED_ZEROS_FP_MATH:
97 		flags.setNoSignedZeros();
98 		llvm::unwrap(builder)->setFastMathFlags(flags);
99 		break;
100 	case AC_FLOAT_MODE_UNSAFE_FP_MATH:
101 #if HAVE_LLVM >= 0x0600
102 		flags.setFast();
103 #else
104 		flags.setUnsafeAlgebra();
105 #endif
106 		llvm::unwrap(builder)->setFastMathFlags(flags);
107 		break;
108 	}
109 #endif
110 
111 	return builder;
112 }
113