From: Timothy Arceri <tarceri@itsqueeze.com>
Date: Tue, 16 Jan 2018 06:45:30 +0000 (+1100)
Subject: ac: fix buffer overflow bug in 64bit SSBO loads
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e2b9296146746635cd631c5212ae56f0cd270820;p=mesa.git

ac: fix buffer overflow bug in 64bit SSBO loads

Fixes: 441ee1e65b04 "radv/ac: Implement Float64 SSBO loads"

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
---

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 1dc64f87cc9..e07330ca5c8 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -2588,8 +2588,11 @@ static LLVMValueRef visit_load_buffer(struct ac_nir_context *ctx,
 			ctx->ac.i1false,
 		};
 
-		results[i] = ac_build_intrinsic(&ctx->ac, load_name, data_type, params, 5, 0);
+		int idx = i;
+		if (instr->dest.ssa.bit_size == 64)
+			idx = i > 1 ? 1 : 0;
 
+		results[idx] = ac_build_intrinsic(&ctx->ac, load_name, data_type, params, 5, 0);
 	}
 
 	assume(results[0]);