stage1: add @shuffle() shufflevector support

I change the semantics of the mask operand, to make it a little more
flexible. There is no real danger in this because it is a compile-error
if you do it the LLVM way (and there is an appropiate error to tell you
this).

v2: avoid problems with double-free

1 files changed, 17 insertions, 0 deletions

diff --git a/src/ir_print.cpp b/src/ir_print.cpp
index f2877b46e6..8561ed4508 100644
--- a/src/ir_print.cpp
+++ b/src/ir_print.cpp
@@ -42,6 +42,8 @@ static const char* ir_instruction_type_str(IrInstruction* instruction) {
     switch (instruction->id) {
         case IrInstructionIdInvalid:
             return "Invalid";
+        case IrInstructionIdShuffleVector:
+            return "Shuffle";
         case IrInstructionIdDeclVarSrc:
             return "DeclVarSrc";
         case IrInstructionIdDeclVarGen:
@@ -1208,6 +1210,18 @@ static void ir_print_vector_type(IrPrint *irp, IrInstructionVectorType *instruct
     fprintf(irp->f, ")");
 }
 
+static void ir_print_shuffle_vector(IrPrint *irp, IrInstructionShuffleVector *instruction) {
+    fprintf(irp->f, "@shuffle(");
+    ir_print_other_instruction(irp, instruction->scalar_type);
+    fprintf(irp->f, ", ");
+    ir_print_other_instruction(irp, instruction->a);
+    fprintf(irp->f, ", ");
+    ir_print_other_instruction(irp, instruction->b);
+    fprintf(irp->f, ", ");
+    ir_print_other_instruction(irp, instruction->mask);
+    fprintf(irp->f, ")");
+}
+
 static void ir_print_bool_not(IrPrint *irp, IrInstructionBoolNot *instruction) {
     fprintf(irp->f, "! ");
     ir_print_other_instruction(irp, instruction->value);
@@ -2143,6 +2157,9 @@ static void ir_print_instruction(IrPrint *irp, IrInstruction *instruction, bool
         case IrInstructionIdVectorType:
             ir_print_vector_type(irp, (IrInstructionVectorType *)instruction);
             break;
+        case IrInstructionIdShuffleVector:
+            ir_print_shuffle_vector(irp, (IrInstructionShuffleVector *)instruction);
+            break;
         case IrInstructionIdBoolNot:
             ir_print_bool_not(irp, (IrInstructionBoolNot *)instruction);
             break;