Mesa (master): ac: add 16-bit support to ac_build_ddxy()
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Wed Apr 10 07:09:16 UTC 2019
Module: Mesa
Branch: master
Commit: fd1fc255d9d89b1fe9e7d66c1668cde27aff4623
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=fd1fc255d9d89b1fe9e7d66c1668cde27aff4623
Author: Rhys Perry <pendingchaos02 at gmail.com>
Date: Mon Apr 8 09:24:57 2019 +0200
ac: add 16-bit support to ac_build_ddxy()
Signed-off-by: Rhys Perry <pendingchaos02 at gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
---
src/amd/common/ac_llvm_build.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
index 54e90288bda..3e3ca5c7fdb 100644
--- a/src/amd/common/ac_llvm_build.c
+++ b/src/amd/common/ac_llvm_build.c
@@ -1862,9 +1862,16 @@ ac_build_ddxy(struct ac_llvm_context *ctx,
LLVMValueRef val)
{
unsigned tl_lanes[4], trbl_lanes[4];
+ char name[32], type[8];
LLVMValueRef tl, trbl;
+ LLVMTypeRef result_type;
LLVMValueRef result;
+ result_type = ac_to_float_type(ctx, LLVMTypeOf(val));
+
+ if (result_type == ctx->f16)
+ val = LLVMBuildZExt(ctx->builder, val, ctx->i32, "");
+
for (unsigned i = 0; i < 4; ++i) {
tl_lanes[i] = i & mask;
trbl_lanes[i] = (i & mask) + idx;
@@ -1877,14 +1884,19 @@ ac_build_ddxy(struct ac_llvm_context *ctx,
trbl_lanes[0], trbl_lanes[1],
trbl_lanes[2], trbl_lanes[3]);
- tl = LLVMBuildBitCast(ctx->builder, tl, ctx->f32, "");
- trbl = LLVMBuildBitCast(ctx->builder, trbl, ctx->f32, "");
+ if (result_type == ctx->f16) {
+ tl = LLVMBuildTrunc(ctx->builder, tl, ctx->i16, "");
+ trbl = LLVMBuildTrunc(ctx->builder, trbl, ctx->i16, "");
+ }
+
+ tl = LLVMBuildBitCast(ctx->builder, tl, result_type, "");
+ trbl = LLVMBuildBitCast(ctx->builder, trbl, result_type, "");
result = LLVMBuildFSub(ctx->builder, trbl, tl, "");
- result = ac_build_intrinsic(ctx, "llvm.amdgcn.wqm.f32", ctx->f32,
- &result, 1, 0);
+ ac_build_type_name_for_intr(result_type, type, sizeof(type));
+ snprintf(name, sizeof(name), "llvm.amdgcn.wqm.%s", type);
- return result;
+ return ac_build_intrinsic(ctx, name, result_type, &result, 1, 0);
}
void
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