llvm-svn: 64445

llvm-svn: 64252

llvm-svn: 64205

llvm-svn: 64203

llvm-svn: 64159

llvm-svn: 64157

llvm-svn: 64095

If people could beat on it and let me know if there are any new
semantics required by newer language standards or DRs or any little
details I goofed on, I'd be happy to fix any issues found.

llvm-svn: 64079

llvm-svn: 64053

Add support for emitting cleanup blocks. Make EmitCompoundStatement emit cleanup blocks if necessary

llvm-svn: 64051

correctly.  This should lay the ground work to throw the big switch
and start code gening break and continue in the presense of vlas.

llvm-svn: 64046

llvm-svn: 64030

llvm-svn: 64021

llvm-svn: 64020

llvm-svn: 64014

If an input constraint refers to an output constraint, it should have the same constraint info as the output constraint. Fixes PR3417

llvm-svn: 63127

llvm-svn: 62674

llvm-svn: 62444

llvm-svn: 62441

Change TargetInfo::validateInputConstraint to take begin/end name iterators instead of the number of outputs. No functionality change.

llvm-svn: 62433

llvm-svn: 62069

llvm-svn: 62049

llvm-svn: 62043

llvm-svn: 62041

string.

That said, we should probably try and track down the correct clobber 
lists for the targets that don't have them (PPC, ARM, and Sparc), 
so that we can generate correct code.

llvm-svn: 61298

warning by using an unsigned index.

llvm-svn: 61292

Check the entire StackSaveValues stack for VLAs when dealing with goto and return statements. Noticed by Eli Friedman.

llvm-svn: 61289

llvm-svn: 61283

Store the size of the EH stack inside each BreakContinue struct so we know when a break/continue won't cross a try block.

llvm-svn: 60998

Work in preparation for VLAs. Make sure to restore the stack if necessary (Saving the stack isn't implemented right now :)

llvm-svn: 60925

llvm-svn: 59881

Patch by Fariborz!

llvm-svn: 59377

landing pads.
 - Primarily a cleanliness issue instead of a performance issue (this
   eliminates all blocks w/o predecessors on 176.gcc/expr.c), but this
   also allows subsequent code to recognize it is unreachable and
   potentially avoid IRgen.

llvm-svn: 59211

 - Use dotted notation for blocks related to a particular statement
   type.
 - Use .end for landing pads.

No functionality change in NDEBUG mode. :)

llvm-svn: 59210

 - Indicates that caller is done with the block and it can be dropped
   if it has no predecessors. Useful for callers who need to make
   landing pads but which may not be reached.

No functionality change.

llvm-svn: 59207

more confusing ifelse.

Use dotted names for if blocks (if.then vs ifthen).

llvm-svn: 59201

 - Split out "simple" statements which can easily handle IR generation
   when there is no insert point. These are generally statements which
   start by emitting a new block or are only containers for other
   statements.

 - This fixes a regression in emitting dummy blocks, notably for case
   statements.

 - This also fixes spurious emission of a number of debug stoppoint
   intrinsic instructions.

Remove unneeded sw.body block, just clear the insertion point.

Lift out CodeGenFunction::EmitStopPoint which calls into the
CGDebugInfo class when generating debug info.

Normalize definitions of Emit{Break,Continue}Stmt and usage of
ErrorUnsupported.

llvm-svn: 59118

CodeGenFunction.cpp.  Change VisitConditionalOperator to use
constant fold instead of codegen'ing a constant conditional.

Change ForStmt to use EmitBranchOnBoolExpr, this shrinks
expr.c very slightly to 40239 lines.

llvm-svn: 59113

have a condition that is an &&/||.  Before we used to compile things like this:

int test() {
  if (x && y) foo(); else bar();
}

into:

	%0 = load i32* @x		; <i32> [#uses=1]
	%1 = icmp ne i32 %0, 0		; <i1> [#uses=1]
	br i1 %1, label %land_rhs, label %land_cont

land_rhs:		; preds = %entry
	%2 = load i32* @y		; <i32> [#uses=1]
	%3 = icmp ne i32 %2, 0		; <i1> [#uses=1]
	br label %land_cont

land_cont:		; preds = %land_rhs, %entry
	%4 = phi i1 [ false, %entry ], [ %3, %land_rhs ]		; <i1> [#uses=1]
	br i1 %4, label %ifthen, label %ifelse

ifthen:		; preds = %land_cont
	%call = call i32 (...)* @foo()		; <i32> [#uses=0]
	br label %ifend

ifelse:		; preds = %land_cont
	%call1 = call i32 (...)* @bar()		; <i32> [#uses=0]
	br label %ifend

ifend:		; preds = %ifelse, %ifthen


Now we turn it into the much more svelte code:

        %0 = load i32* @x               ; <i32> [#uses=1]
        %1 = icmp ne i32 %0, 0          ; <i1> [#uses=1]
        br i1 %1, label %land_lhs_true, label %ifelse

land_lhs_true:          ; preds = %entry
        %2 = load i32* @y               ; <i32> [#uses=1]
        %3 = icmp ne i32 %2, 0          ; <i1> [#uses=1]
        br i1 %3, label %ifthen, label %ifelse

ifthen:         ; preds = %land_lhs_true
        %call = call i32 (...)* @foo()          ; <i32> [#uses=0]
        br label %ifend

ifelse:         ; preds = %land_lhs_true, %entry
        %call1 = call i32 (...)* @bar()         ; <i32> [#uses=0]
        br label %ifend

ifend:          ; preds = %ifelse, %ifthen

Note the lack of a phi node.

This shrinks the -O0 .ll file for 176.gcc/expr.c from 43176 to 40267 lines.

llvm-svn: 59111

llvm-svn: 59103