constexpr_bt.ll
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; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
; RUN: diff %t1.ll %t2.ll
; This testcase is for testing expressions constructed from
; constant values, including constant pointers to globals.
;
;;-------------------------------
;; Test constant cast expressions
;;-------------------------------
@0 = global i63 u0x00001 ; hexadecimal unsigned integer constants
@1 = global i63 s0x012312 ; hexadecimal signed integer constants
@t2 = global i33* @t1 ;; Forward reference without cast
@t3 = global i33* bitcast (i33* @t1 to i33*) ;; Forward reference with cast
@t1 = global i33 4 ;; i32* @0
@t4 = global i33** bitcast (i33** @t3 to i33**) ;; Cast of a previous cast
@t5 = global i33** @t3 ;; Reference to a previous cast
@t6 = global i33*** @t4
@t7 = global float* inttoptr (i32 12345678 to float*) ;; Cast ordinary value to ptr
@t9 = global i33 fptosi (float sitofp (i33 8 to float) to i33) ;; Nested cast expression
@2 = global i32* bitcast (float* @4 to i32*) ;; Forward numeric reference
@3 = global float* @4 ;; Duplicate forward numeric reference
@4 = global float 0.0
;;---------------------------------------------------
;; Test constant getelementpr expressions for arrays
;;---------------------------------------------------
@array = constant [2 x i33] [ i33 12, i33 52 ]
@arrayPtr = global i33* getelementptr ([2 x i33], [2 x i33]* @array, i64 0, i64 0) ;; i33* &@array[0][0]
@arrayPtr5 = global i33** getelementptr (i33*, i33** @arrayPtr, i64 5) ;; i33* &@arrayPtr[5]
@somestr = constant [11x i8] c"hello world"
@char5 = global i8* getelementptr([11x i8], [11x i8]* @somestr, i64 0, i64 5)
;; cast of getelementptr
@char8a = global i33* bitcast (i8* getelementptr([11x i8], [11x i8]* @somestr, i64 0, i64 8) to i33*)
;; getelementptr containing casts
@char8b = global i8* getelementptr([11x i8], [11x i8]* @somestr, i64 sext (i8 0 to i64), i64 sext (i8 8 to i64))
;;-------------------------------------------------------
;; TODO: Test constant getelementpr expressions for structures
;;-------------------------------------------------------
%SType = type { i33 , {float, {i8} }, i64 } ;; struct containing struct
%SAType = type { i33 , {[2x float], i64} } ;; struct containing array
@S1 = global %SType* null ;; Global initialized to NULL
@S2c = constant %SType { i33 1, {float,{i8}} {float 2.0, {i8} {i8 3}}, i64 4}
@S3c = constant %SAType { i33 1, {[2x float], i64} {[2x float] [float 2.0, float 3.0], i64 4} }
@S1ptr = global %SType** @S1 ;; Ref. to global S1
@S2 = global %SType* @S2c ;; Ref. to constant S2
@S3 = global %SAType* @S3c ;; Ref. to constant S3
;; Pointer to float (**@S1).1.0
@S1fld1a = global float* getelementptr (%SType, %SType* @S2c, i64 0, i32 1, i32 0)
;; Another ptr to the same!
@S1fld1b = global float* getelementptr (%SType, %SType* @S2c, i64 0, i32 1, i32 0)
@S1fld1bptr = global float** @S1fld1b ;; Ref. to previous pointer
;; Pointer to i8 (**@S2).1.1.0
@S2fld3 = global i8* getelementptr (%SType, %SType* @S2c, i64 0, i32 1, i32 1, i32 0)
;; Pointer to float (**@S2).1.0[0]
;@S3fld3 = global float* getelementptr (%SAType*, %SAType** @S3, i64 0, i64 0, i32 1, i32 0, i64 0)
;;---------------------------------------------------------
;; TODO: Test constant expressions for unary and binary operators
;;---------------------------------------------------------
;;---------------------------------------------------