gallium/radeon: don't crash when getting out-of-bounds TEMP references

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
index 18afbcb0a2e9f300010f72676764208b33a2a711..20e506b7c5e433058c34cc69a3a637e76a70a2d8 100644 (file)
--- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
+++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
@@ -191,6 +191,8 @@ emit_fetch(
                break;
 
        case TGSI_FILE_TEMPORARY:
+               if (reg->Register.Index >= ctx->temps_count)
+                       return LLVMGetUndef(tgsi2llvmtype(bld_base, type));
                if (uses_temp_indirect_addressing(bld_base)) {
                        ptr = lp_get_temp_ptr_soa(bld, reg->Register.Index, swizzle);
                        break;
@@ -395,6 +397,8 @@ emit_store(
                                        break;
 
                                case TGSI_FILE_TEMPORARY:
+                                       if (range.First + i >= ctx->temps_count)
+                                               continue;
                                        if (uses_temp_indirect_addressing(bld_base))
                                                temp_ptr = lp_get_temp_ptr_soa(bld, i + range.First, chan_index);
                                        else
@@ -416,6 +420,8 @@ emit_store(
                                break;
 
                        case TGSI_FILE_TEMPORARY:
+                               if (reg->Register.Index >= ctx->temps_count)
+                                       continue;
                                if (uses_temp_indirect_addressing(bld_base)) {
                                        temp_ptr = NULL;
                                        break;