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3560edede3
An oddity of the .ll syntax is that the "@var = " in @var = global i32 42 is optional. Writing just global i32 42 is equivalent to @0 = global i32 42 This means that there is a pretty big First set at the top level. The current implementation maintains it manually. I was trying to refactor it, but then started wondering why keep it a all. I personally find the above syntax confusing. It looks like something is missing. This patch removes the feature and simplifies the parser. llvm-svn: 269096
81 lines
3.6 KiB
LLVM
81 lines
3.6 KiB
LLVM
; RUN: llvm-as < %s | llvm-dis > %t1.ll
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; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
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; RUN: diff %t1.ll %t2.ll
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; This testcase is for testing expressions constructed from
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; constant values, including constant pointers to globals.
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;
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;;-------------------------------
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;; Test constant cast expressions
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;;-------------------------------
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@0 = global i64 u0x00001 ; hexadecimal unsigned integer constants
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@1 = global i64 s0x0012312 ; hexadecimal signed integer constants
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@t2 = global i32* @t1 ;; Forward reference without cast
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@t3 = global i32* bitcast (i32* @t1 to i32*) ;; Forward reference with cast
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@t1 = global i32 4 ;; i32* @0
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@t4 = global i32** bitcast (i32** @t3 to i32**) ;; Cast of a previous cast
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@t5 = global i32** @t3 ;; Reference to a previous cast
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@t6 = global i32*** @t4 ;; Different ref. to a previous cast
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@t7 = global float* inttoptr (i32 12345678 to float*) ;; Cast ordinary value to ptr
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@t9 = global i32 bitcast (float bitcast (i32 8 to float) to i32) ;; Nested cast expression
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@2 = global i32* bitcast (float* @4 to i32*) ;; Forward numeric reference
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@3 = global float* @4 ;; Duplicate forward numeric reference
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@4 = global float 0.0
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;;---------------------------------------------------
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;; Test constant getelementpr expressions for arrays
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;;---------------------------------------------------
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@array = constant [2 x i32] [ i32 12, i32 52 ]
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@arrayPtr = global i32* getelementptr ([2 x i32], [2 x i32]* @array, i64 0, i64 0) ;; i32* &@array[0][0]
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@arrayPtr5 = global i32** getelementptr (i32*, i32** @arrayPtr, i64 5) ;; i32* &@arrayPtr[5]
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@somestr = constant [11x i8] c"hello world"
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@char5 = global i8* getelementptr([11x i8], [11x i8]* @somestr, i64 0, i64 5)
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;; cast of getelementptr
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@char8a = global i32* bitcast (i8* getelementptr([11x i8], [11x i8]* @somestr, i64 0, i64 8) to i32*)
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;; getelementptr containing casts
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@char8b = global i8* getelementptr([11x i8], [11x i8]* @somestr, i64 sext (i8 0 to i64), i64 sext (i8 8 to i64))
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;;-------------------------------------------------------
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;; TODO: Test constant getelementpr expressions for structures
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;;-------------------------------------------------------
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%SType = type { i32 , {float, {i8} }, i64 } ;; struct containing struct
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%SAType = type { i32 , {[2x float], i64} } ;; struct containing array
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@S1 = global %SType* null ;; Global initialized to NULL
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@S2c = constant %SType { i32 1, {float,{i8}} {float 2.0, {i8} {i8 3}}, i64 4}
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@S3c = constant %SAType { i32 1, {[2x float], i64} {[2x float] [float 2.0, float 3.0], i64 4} }
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@S1ptr = global %SType** @S1 ;; Ref. to global S1
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@S2 = global %SType* @S2c ;; Ref. to constant S2
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@S3 = global %SAType* @S3c ;; Ref. to constant S3
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;; Pointer to float (**@S1).1.0
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@S1fld1a = global float* getelementptr (%SType, %SType* @S2c, i64 0, i32 1, i32 0)
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;; Another ptr to the same!
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@S1fld1b = global float* getelementptr (%SType, %SType* @S2c, i64 0, i32 1, i32 0)
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@S1fld1bptr = global float** @S1fld1b ;; Ref. to previous pointer
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;; Pointer to i8 (**@S2).1.1.0
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@S2fld3 = global i8* getelementptr (%SType, %SType* @S2c, i64 0, i32 1, i32 1, i32 0)
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;; Pointer to float (**@S2).1.0[0]
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;@S3fld3 = global float* getelementptr (%SAType*, %SAType** @S3, i64 0, i64 0, i32 1, i32 0, i64 0)
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;;---------------------------------------------------------
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;; TODO: Test constant expressions for unary and binary operators
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;;---------------------------------------------------------
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;;---------------------------------------------------
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