5 Constants

9.0

5 Constants🔗ℹ

Functions for creating constant values in LLVM IR.

5.1 Integer Constants🔗ℹ

procedure
(llvm-const-int type value [sign-extend]) → LLVMValueRef?
  type : LLVMTypeRef?
  value : exact-nonnegative-integer?
  sign-extend : boolean? = #f

Creates a constant integer of the given type with value. If sign-extend is true, the value is sign-extended to the type’s width.

procedure
(llvm-const-int-of-string type text radix) → LLVMValueRef?
  type : LLVMTypeRef?
  text : string?
  radix : exact-nonnegative-integer?

Creates a constant integer by parsing text in the given radix (e.g., 10 for decimal, 16 for hex).

procedure
(llvm-const-int-get-s-ext-value const-val) → integer?
const-val : LLVMValueRef?

Returns the sign-extended value of a constant integer.

procedure
(llvm-const-int-get-z-ext-value const-val)
→ exact-nonnegative-integer?
const-val : LLVMValueRef?

Returns the zero-extended value of a constant integer.

5.2 Floating-Point Constants🔗ℹ

procedure
(llvm-const-real type value) → LLVMValueRef?
type : LLVMTypeRef?
value : number?

Creates a constant floating-point value of the given type.

procedure
(llvm-const-real-of-string type text) → LLVMValueRef?
type : LLVMTypeRef?
text : string?

Creates a constant floating-point value by parsing text.

5.3 Composite Constants🔗ℹ

procedure
(llvm-const-struct constant-vals [packed?]) → LLVMValueRef?
constant-vals : (listof LLVMValueRef?)
packed? : boolean? = #f

Creates a constant struct with the given values. If packed? is true, the struct has no padding.

procedure
(llvm-const-named-struct struct-ty
constant-vals) → LLVMValueRef?
struct-ty : LLVMTypeRef?
constant-vals : (listof LLVMValueRef?)

Creates a constant value of a named struct type with the given field values.

procedure
(llvm-const-array element-ty constant-vals) → LLVMValueRef?
element-ty : LLVMTypeRef?
constant-vals : (listof LLVMValueRef?)

Creates a constant array of the given element type with the given values.

procedure
(llvm-const-array2 element-ty
constant-vals) → LLVMValueRef?
element-ty : LLVMTypeRef?
constant-vals : (listof LLVMValueRef?)

Creates a constant array (64-bit length variant) of the given element type with the given values.

procedure
(llvm-const-vector scalar-constant-vals) → LLVMValueRef?
scalar-constant-vals : (listof LLVMValueRef?)

Creates a constant vector with the given scalar values.

5.4 Special Constants🔗ℹ

procedure
(llvm-const-null type) → LLVMValueRef?
type : LLVMTypeRef?

Creates a null constant of the given type.

procedure
(llvm-const-all-ones type) → LLVMValueRef?
type : LLVMTypeRef?

Creates a constant with all bits set for the given type.

procedure
(llvm-const-pointer-null type) → LLVMValueRef?
type : LLVMTypeRef?

Creates a null pointer constant of the given pointer type.

procedure
(llvm-get-undef type) → LLVMValueRef?
type : LLVMTypeRef?

Creates an undefined value of the given type.

procedure
(llvm-get-poison type) → LLVMValueRef?
type : LLVMTypeRef?

Creates a poison value of the given type.

5.5 Constant Expressions🔗ℹ

procedure
(llvm-const-gep2 ty
constant-val
constant-indices) → LLVMValueRef?
  ty : LLVMTypeRef?
  constant-val : LLVMValueRef?
  constant-indices : (listof LLVMValueRef?)

Creates a constant GEP (Get Element Pointer) expression.

procedure
(llvm-const-in-bounds-gep2 ty
constant-val
constant-indices) → LLVMValueRef?
  ty : LLVMTypeRef?
  constant-val : LLVMValueRef?
  constant-indices : (listof LLVMValueRef?)

Creates a constant in-bounds GEP expression.

1	LLVM Structure
2	Types
3	Module
4	Builder
5	Constants
6	JIT

5.1	Integer Constants
5.2	Floating-Point Constants
5.3	Composite Constants
5.4	Special Constants
5.5	Constant Expressions