diff options
Diffstat (limited to 'test/Feature/constexpr.ll')
-rw-r--r-- | test/Feature/constexpr.ll | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/test/Feature/constexpr.ll b/test/Feature/constexpr.ll new file mode 100644 index 0000000..13e6f36 --- /dev/null +++ b/test/Feature/constexpr.ll @@ -0,0 +1,80 @@ +; RUN: llvm-as < %s | 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 +;;------------------------------- + +global i64 u0x00001 ; hexadecimal unsigned integer constants +global i64 s0x0012312 ; hexadecimal signed integer constants + +@t2 = global i32* @t1 ;; Forward reference without cast +@t3 = global i32* bitcast (i32* @t1 to i32*) ;; Forward reference with cast +@t1 = global i32 4 ;; i32* @0 +@t4 = global i32** bitcast (i32** @t3 to i32**) ;; Cast of a previous cast +@t5 = global i32** @t3 ;; Reference to a previous cast +@t6 = global i32*** @t4 ;; Different ref. to a previous cast +@t7 = global float* inttoptr (i32 12345678 to float*) ;; Cast ordinary value to ptr +@t9 = global i32 bitcast (float bitcast (i32 8 to float) to i32) ;; Nested cast expression + +global i32* bitcast (float* @4 to i32*) ;; Forward numeric reference +global float* @4 ;; Duplicate forward numeric reference +global float 0.0 + + +;;--------------------------------------------------- +;; Test constant getelementpr expressions for arrays +;;--------------------------------------------------- + +@array = constant [2 x i32] [ i32 12, i32 52 ] +@arrayPtr = global i32* getelementptr ([2 x i32]* @array, i64 0, i64 0) ;; i32* &@array[0][0] +@arrayPtr5 = global i32** getelementptr (i32** @arrayPtr, i64 5) ;; i32* &@arrayPtr[5] + +@somestr = constant [11x i8] c"hello world" +@char5 = global i8* getelementptr([11x i8]* @somestr, i64 0, i64 5) + +;; cast of getelementptr +@char8a = global i32* bitcast (i8* getelementptr([11x i8]* @somestr, i64 0, i64 8) to i32*) + +;; getelementptr containing casts +@char8b = global i8* getelementptr([11x i8]* @somestr, i64 sext (i8 0 to i64), i64 sext (i8 8 to i64)) + +;;------------------------------------------------------- +;; TODO: Test constant getelementpr expressions for structures +;;------------------------------------------------------- + +%SType = type { i32 , {float, {i8} }, i64 } ;; struct containing struct +%SAType = type { i32 , {[2x float], i64} } ;; struct containing array + +@S1 = global %SType* null ;; Global initialized to NULL +@S2c = constant %SType { i32 1, {float,{i8}} {float 2.0, {i8} {i8 3}}, i64 4} + +@S3c = constant %SAType { i32 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* @S2c, i64 0, i32 1, i32 0) + ;; Another ptr to the same! +@S1fld1b = global float* getelementptr (%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* @S2c, i64 0, i32 1, i32 1, i32 0) + + ;; Pointer to float (**@S2).1.0[0] +;@S3fld3 = global float* getelementptr (%SAType** @S3, i64 0, i64 0, i32 1, i32 0, i64 0) + +;;--------------------------------------------------------- +;; TODO: Test constant expressions for unary and binary operators +;;--------------------------------------------------------- + +;;--------------------------------------------------- |