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R600/SI: Expand udiv v[24]i32 for SI and v2i32 for EG

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Also add lit test for both cases on SI, and v2i32 for evergreen.

Note: I followed the guidance of the v4i32 EG check... UDIV produces really
complex code, so let's just check that the instruction was lowered
successfully.

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 184843
This commit is contained in:
Aaron Watry 2013-06-25 13:55:43 +00:00
parent 16d80c0529
commit 5527b6c6b6
3 changed files with 26 additions and 3 deletions
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1
llvm/lib/Target/R600/R600ISelLowering.cpp
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@ -56,6 +56,7 @@ R600TargetLowering::R600TargetLowering(TargetMachine &TM) :
setOperationAction(ISD::SUB, MVT::v4i32, Expand);
setOperationAction(ISD::SUB, MVT::v2i32, Expand);
setOperationAction(ISD::UINT_TO_FP, MVT::v4i32, Expand);
setOperationAction(ISD::UDIV, MVT::v2i32, Expand);
setOperationAction(ISD::UDIV, MVT::v4i32, Expand);
setOperationAction(ISD::UREM, MVT::v4i32, Expand);
setOperationAction(ISD::SETCC, MVT::v4i32, Expand);

3
llvm/lib/Target/R600/SIISelLowering.cpp
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@ -87,6 +87,9 @@ SITargetLowering::SITargetLowering(TargetMachine &TM) :
setOperationAction(ISD::SUB, MVT::v2i32, Expand);
setOperationAction(ISD::SUB, MVT::v4i32, Expand);
setOperationAction(ISD::UDIV, MVT::v2i32, Expand);
setOperationAction(ISD::UDIV, MVT::v4i32, Expand);
setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
setOperationAction(ISD::SELECT_CC, MVT::i32, Custom);

25
llvm/test/CodeGen/R600/udiv.ll
View File

@ -1,11 +1,30 @@
;RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s
;RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck --check-prefix=EG-CHECK %s
;RUN: llc < %s -march=r600 -mcpu=verde | FileCheck --check-prefix=SI-CHECK %s
;The code generated by udiv is long and complex and may frequently change.
;The goal of this test is to make sure the ISel doesn't fail when it gets
;a v4i32 udiv
;CHECK: CF_END
define void @test(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in) {
;EG-CHECK: @test2
;EG-CHECK: CF_END
;SI-CHECK: @test2
;SI-CHECK: S_ENDPGM
define void @test2(<2 x i32> addrspace(1)* %out, <2 x i32> addrspace(1)* %in) {
%b_ptr = getelementptr <2 x i32> addrspace(1)* %in, i32 1
%a = load <2 x i32> addrspace(1) * %in
%b = load <2 x i32> addrspace(1) * %b_ptr
%result = udiv <2 x i32> %a, %b
store <2 x i32> %result, <2 x i32> addrspace(1)* %out
ret void
}
;EG-CHECK: @test4
;EG-CHECK: CF_END
;SI-CHECK: @test4
;SI-CHECK: S_ENDPGM
define void @test4(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in) {
%b_ptr = getelementptr <4 x i32> addrspace(1)* %in, i32 1
%a = load <4 x i32> addrspace(1) * %in
%b = load <4 x i32> addrspace(1) * %b_ptr