Commit Graph

31 Commits

Author SHA1 Message Date
Chris Lattner 47c247e7bf add codegen support for <<= and >>=.
llvm-svn: 39713
2007-06-29 17:26:27 +00:00
Chris Lattner b25a94383a Implement the rest of the compound assignment operators, except shifts.
llvm-svn: 39712
2007-06-29 17:03:06 +00:00
Chris Lattner cd215f00ee refactor some code, implement -=
llvm-svn: 39711
2007-06-29 16:52:55 +00:00
Chris Lattner 9369a563b4 Rename ArithAssignBinaryOperator -> CompoundAssignOperator, implement
codegen support for +=.

llvm-svn: 39710
2007-06-29 16:31:29 +00:00
Chris Lattner e9a6453ded add some infrastructure for codegen'ing complex numbers. implement addition
of complex.  We now produce optimal code for:

void test(_Complex float *Y) {
  *Y = *Y + *Y;
}

$ clang -emit-llvm cg.c | llvm-as | opt -std-compile-opts | llc -march=x86-64
...
_test:
        movss (%rdi), %xmm0
        addss %xmm0, %xmm0
        movss 4(%rdi), %xmm1
        movss %xmm0, (%rdi)
        addss %xmm1, %xmm1
        movss %xmm1, 4(%rdi)
        ret

llvm-svn: 39673
2007-06-22 21:44:33 +00:00
Chris Lattner c6395936ae Split complex types out from being members of BuiltinType to being their own
types.

llvm-svn: 39672
2007-06-22 20:56:16 +00:00
Chris Lattner f033c147c9 remove location tracking for target info
llvm-svn: 39671
2007-06-22 19:05:19 +00:00
Chris Lattner 09153c0a8c Build enough support for aggregates to be able to compile this:
void test(int A, _Complex float Y) {
  _Complex float X;
  X = X;

}

llvm-svn: 39669
2007-06-22 18:48:09 +00:00
Chris Lattner 1fde0b345b implement codegen of the relational operations
One major FIXME though.

llvm-svn: 39666
2007-06-20 18:30:55 +00:00
Chris Lattner 273c63d450 Implement the equality operators for simple types
llvm-svn: 39665
2007-06-20 18:02:30 +00:00
Chris Lattner b6984c4854 Hook up global function and variable handling. We can now compile:
int X, bar(int,int,int);
short Y;

double foo() {
  return bar(X, Y, 3);
}

into:

@X = external global i32                ; <i32*> [#uses=1]
@Y = external global i16                ; <i16*> [#uses=1]

define double @foo() {
entry:
        %tmp = load i32* @X             ; <i32> [#uses=1]
        %tmp1 = load i16* @Y            ; <i16> [#uses=1]
        %promote = sext i16 %tmp1 to i32                ; <i32> [#uses=1]
        %call = tail call i32 @bar( i32 %tmp, i32 %promote, i32 3 )             ; <i32> [#uses=1]
        %conv = sitofp i32 %call to double              ; <double> [#uses=1]
        ret double %conv
}

declare i32 @bar(i32, i32, i32)

llvm-svn: 39663
2007-06-20 04:44:43 +00:00
Chris Lattner 23b7eb677d Finally bite the bullet and make the major change: split the clang namespace
out of the llvm namespace.  This makes the clang namespace be a sibling of
llvm instead of being a child.

The good thing about this is that it makes many things unambiguous.  The
bad things is that many things in the llvm namespace (notably data structures
like smallvector) now require an llvm:: qualifier.  IMO, libsystem and libsupport
should be split out of llvm into their own namespace in the future, which will fix
this issue.

llvm-svn: 39659
2007-06-15 23:05:46 +00:00
Chris Lattner 2b228c95aa implement codegen of calls. We can now compile:
double foo( int (*FP)(int, int, int)) {
  return FP(1, 2, 3);
}

to:

define double @foo(i32 (i32, i32, i32)* %FP) {
entry:
        %call = tail call i32 %FP( i32 1, i32 2, i32 3 )
        %conv = sitofp i32 %call to double
        ret double %conv
}

llvm-svn: 39658
2007-06-15 21:34:29 +00:00
Chris Lattner b48238188e Fix a nasty bug which caused infinite recursion
llvm-svn: 39655
2007-06-15 21:04:38 +00:00
Chris Lattner 53621a535d Implement support for formal arguments. We can now compile this:
int test(int X, short Y, float Z) {
  return (int)(X*Y+Z);
}

to:

define i32 @test(i32 %X, i16 %Y, float %Z) {
entry:
        %promote = sext i16 %Y to i32           ; <i32> [#uses=1]
        %mul = mul i32 %promote, %X             ; <i32> [#uses=1]
        %promote3 = sitofp i32 %mul to float            ; <float> [#uses=1]
        %add = add float %promote3, %Z          ; <float> [#uses=1]
        %conv = fptosi float %add to i32                ; <i32> [#uses=1]
        ret i32 %conv
}

with:

$ clang -emit-llvm t.c | llvm-as | opt -std-compile-opts | llvm-dis

llvm-svn: 39652
2007-06-13 20:44:40 +00:00
Chris Lattner f99b3f5ec2 Emit codegen of enum literals.
llvm-svn: 39646
2007-06-11 03:52:52 +00:00
Chris Lattner d9d2fb1420 Implement array subscripts for non-vla types.
llvm-svn: 39622
2007-06-08 23:31:14 +00:00
Chris Lattner 4347e369b4 implement codegen of string literals.
llvm-svn: 39597
2007-06-06 04:54:52 +00:00
Chris Lattner 83b484b3be implement the real int/fp conversions
llvm-svn: 39596
2007-06-06 04:39:08 +00:00
Chris Lattner cf106ab42a implement support for casts to/from pointers.
llvm-svn: 39595
2007-06-06 04:05:39 +00:00
Chris Lattner 8394d795c3 implement codegen of a bunch more loop constructs and most expressions
llvm-svn: 39593
2007-06-05 20:53:16 +00:00
Chris Lattner 946aa31f02 implement codegen of while stmts and lvalue evaluation of paren exprs :)
llvm-svn: 39582
2007-06-05 03:59:43 +00:00
Chris Lattner b16f455e8c Type::isSignedInteger() and isUnsignedInteger() did not properly account for
'char', which varies based on the target.

Instead of spreading target knowledge throughout the compiler, bifurcate char
into Char_S and Char_U, and have ASTContext create the right one based on the
target, when it starts up.

llvm-svn: 39577
2007-06-03 07:25:34 +00:00
Chris Lattner cf25024828 Implement EmitUsualArithmeticConversions, so we can add shorts to floats and
ints to long long etc.  For int to longlong, we now get:

        %tmp = load i64* %F             ; <i64> [#uses=1]
        %tmp1 = load i32* %D            ; <i32> [#uses=1]
        %promote = sext i32 %tmp1 to i64                ; <i64> [#uses=1]
        %tmp2 = add i64 %tmp, %promote          ; <i64> [#uses=0]

llvm-svn: 39576
2007-06-03 02:02:44 +00:00
Chris Lattner c18f9d1aed Change EmitUsualArithmeticConversions to use EmitExprWithUsualUnaryConversions.
This allows us to compile:

  register short X;
  {
    int Y;
    return 1+X+Y;

into:

        %tmp = load i16* %X             ; <i16> [#uses=1]
        %promote = sext i16 %tmp to i32         ; <i32> [#uses=1]
        %tmp1 = add i32 1, %promote             ; <i32> [#uses=1]
        %tmp2 = load i32* %Y            ; <i32> [#uses=1]
        %tmp3 = add i32 %tmp1, %tmp2            ; <i32> [#uses=1]
        ret i32 %tmp3

Look at the amazing sign extension, so much happier than an assertion failure. :)

llvm-svn: 39565
2007-06-02 22:51:30 +00:00
Chris Lattner 6db1fb845a implement a first hack at codegen'ing the usual unary conversions.
This allows us to compile:

int func() {
  int A[10];
  if (!A) {

to:

define i32 @func() {
entry:
        %A = alloca [10 x i32]          ; <[10 x i32]*> [#uses=1]
        %arraydecay = getelementptr [10 x i32]* %A, i32 0, i32 0                ; <i32*> [#uses=1]
        %tobool = icmp ne i32* %arraydecay, null                ; <i1> [#uses=1]
        %lnot = xor i1 %tobool, true            ; <i1> [#uses=1]
        br i1 %lnot, label %ifthen, label %ifend

-Chris

llvm-svn: 39564
2007-06-02 22:49:07 +00:00
Chris Lattner a45c5af87b Implement a trivial optimization to reduce the number of compares emitted.
For:

  register short X;
  if (!X) {

We now produce:

        %tmp = load i16* %X             ; <i16> [#uses=1]
        %tobool = icmp ne i16 %tmp, 0           ; <i1> [#uses=1]
        %lnot = xor i1 %tobool, true            ; <i1> [#uses=1]
        br i1 %lnot, label %ifthen, label %ifend

instead of:

        %tmp = load i16* %X             ; <i16> [#uses=1]
        %tobool = icmp ne i16 %tmp, 0           ; <i1> [#uses=1]
        %lnot = xor i1 %tobool, true            ; <i1> [#uses=1]
        %lnot.ext = zext i1 %lnot to i32                ; <i32> [#uses=1]
        %tobool1 = icmp ne i32 %lnot.ext, 0             ; <i1> [#uses=1]
        br i1 %tobool1, label %ifthen, label %ifend

llvm-svn: 39560
2007-06-02 19:47:04 +00:00
Chris Lattner f0106d2578 Refactor EvaluateScalarValueToBool out of if statement emission, so it can
be shared.

Implement infrastructure for unary operator emission.

Implement basic logical not support.  We now compile:

  register short X;

  if (!X) {

into:

        %tmp = load i16* %X             ; <i16> [#uses=1]
        %tobool = icmp ne i16 %tmp, 0           ; <i1> [#uses=1]
        %lnot = xor i1 %tobool, true            ; <i1> [#uses=1]
        zext i1 %lnot to i32            ; <i32>:0 [#uses=1]
        %tobool1 = icmp ne i32 %0, 0            ; <i1> [#uses=1]
        br i1 %tobool1, label %ifthen, label %ifend

llvm-svn: 39559
2007-06-02 19:33:17 +00:00
Chris Lattner d7f58867e5 Implement scaffolding for lvalues. Implement block vardecl lvalues.
This allows us to translate:

int func() {
  register int X;
  {
    int Y;
    return 1+X+Y;
  }
}

into:

define i32 @func() {
entry:
        %X = alloca i32         ; <i32*> [#uses=1]
        %Y = alloca i32         ; <i32*> [#uses=1]
        %allocapt = bitcast i32 undef to i32            ; <i32> [#uses=0]
        %tmp = load i32* %X             ; <i32> [#uses=1]
        %tmp1 = add i32 1, %tmp         ; <i32> [#uses=1]
        %tmp2 = load i32* %Y            ; <i32> [#uses=1]
        %tmp3 = add i32 %tmp1, %tmp2            ; <i32> [#uses=1]
        ret i32 %tmp3
                ; No predecessors!
        ret i32 undef
}

llvm-svn: 39555
2007-06-02 05:24:33 +00:00
Chris Lattner db91b16755 stub out codegen of binary plus. We now compile:
if (11 + 42) {

to:

        %tmp = add i32 11, 42           ; <i32> [#uses=1]
        %tobool = icmp ne i32 %tmp, 0           ; <i1> [#uses=1]
        br i1 %tobool, label %ifthen, label %ifend


but this doesn't handle any of the interesting/hard stuff yet.

llvm-svn: 39545
2007-06-02 00:16:28 +00:00
Chris Lattner e47e440c42 split stmt/expr codegen into their own files.
llvm-svn: 39540
2007-06-01 18:02:12 +00:00