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radeon/ac: use ds_swizzle for derivs on si/cik.

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This looks like it's supported since llvm 3.9 at least,
so switch over radeonsi and radv to using it, -pro also
uses this. We can now drop creating lds for these operations
as the ds_swizzle operation doesn't actually write to lds at all.

Acked-by: Marek Olšák <marek.olsak@amd.com>
(stable requested due to fixing radv CIK conformance tests)
Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2017-08-01 05:10:49 +01:00
parent 35338a242b
commit cb6f16dce9
4 changed files with 46 additions and 41 deletions
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1
src/amd/common/ac_llvm_build.h
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@@ -174,7 +174,6 @@ ac_build_ddxy(struct ac_llvm_context *ctx,
bool has_ds_bpermute,
uint32_t mask,
int idx,
LLVMValueRef lds,
LLVMValueRef val);
#define AC_SENDMSG_GS 2