Mesa (master): ac/nir: support v2f16 derivatives

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Module: Mesa
Branch: master
Commit: c6c8a9bd554f51c05bba5ab2c6cbc70edae9d10f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=c6c8a9bd554f51c05bba5ab2c6cbc70edae9d10f

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Mon May 11 03:01:50 2020 -0400

ac/nir: support v2f16 derivatives

Reviewed-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5003>

---

 src/amd/llvm/ac_llvm_build.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/amd/llvm/ac_llvm_build.c b/src/amd/llvm/ac_llvm_build.c
index 7fa2e38361e..ef4e79c85f0 100644
--- a/src/amd/llvm/ac_llvm_build.c
+++ b/src/amd/llvm/ac_llvm_build.c
@@ -2055,6 +2055,8 @@ ac_build_ddxy(struct ac_llvm_context *ctx,
 
 	if (result_type == ctx->f16)
 		val = LLVMBuildZExt(ctx->builder, val, ctx->i32, "");
+	else if (result_type == ctx->v2f16)
+		val = LLVMBuildBitCast(ctx->builder, val, ctx->i32, "");
 
 	for (unsigned i = 0; i < 4; ++i) {
 		tl_lanes[i] = i & mask;