gallivm: Use lp_build_alloca instead of LLVMBuildAlloca on the loop limiter.

To ensure that the alloca is at the top of the function body, otherwise
LLVM will not eliminate them, causing stack misalignment on 32bits.

Reviewed-by: James Benton <jbenton@vmware.com>

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index 8cfcf5df730b18657b3b6c525787407ba27a7be8..cca7ef5f89a027b631e97e2db3b8db924ca44667 100644 (file)
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -79,10 +79,7 @@ static void lp_exec_mask_init(struct lp_exec_mask *mask, struct lp_build_context
    mask->exec_mask = mask->ret_mask = mask->break_mask = mask->cont_mask = mask->cond_mask =
          LLVMConstAllOnes(mask->int_vec_type);
 
-   mask->loop_limiter = LLVMBuildAlloca(
-      builder,
-      int_type,
-      "looplimiter");
+   mask->loop_limiter = lp_build_alloca(bld->gallivm, int_type, "looplimiter");
 
    LLVMBuildStore(
       builder,