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R600: Fix LowerUDIVREM

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194153 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vincent Lejeune 2013-11-06 17:36:04 +00:00
parent 1b484aba80
commit 69239a98b6
2 changed files with 22 additions and 9 deletions
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10
lib/Target/R600/AMDGPUISelLowering.cpp
View File

@ -625,13 +625,13 @@ SDValue AMDGPUTargetLowering::LowerUDIVREM(SDValue Op,
SDValue Remainder_GE_Den = DAG.getSelectCC(DL, Remainder, Den,
DAG.getConstant(-1, VT),
DAG.getConstant(0, VT),
ISD::SETGE);
// Remainder_GE_Zero = (Remainder >= 0 ? -1 : 0)
SDValue Remainder_GE_Zero = DAG.getSelectCC(DL, Remainder,
DAG.getConstant(0, VT),
ISD::SETUGE);
// Remainder_GE_Zero = (Num >= Num_S_Remainder ? -1 : 0)
SDValue Remainder_GE_Zero = DAG.getSelectCC(DL, Num,
Num_S_Remainder,
DAG.getConstant(-1, VT),
DAG.getConstant(0, VT),
ISD::SETGE);
ISD::SETUGE);
// Tmp1 = Remainder_GE_Den & Remainder_GE_Zero
SDValue Tmp1 = DAG.getNode(ISD::AND, DL, VT, Remainder_GE_Den,
Remainder_GE_Zero);

21
test/CodeGen/R600/udiv.ll
View File

@ -1,13 +1,26 @@
;RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck --check-prefix=EG-CHECK %s
;RUN: llc < %s -march=r600 -mcpu=verde -verify-machineinstrs | FileCheck --check-prefix=SI-CHECK %s
;EG-CHECK-LABEL: @test
;EG-CHECK-NOT: SETGE_INT
;EG-CHECK: CF_END
define void @test(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
%b_ptr = getelementptr i32 addrspace(1)* %in, i32 1
%a = load i32 addrspace(1) * %in
%b = load i32 addrspace(1) * %b_ptr
%result = udiv i32 %a, %b
store i32 %result, i32 addrspace(1)* %out
ret void
}
;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
;EG-CHECK: @test2
;EG-CHECK-LABEL: @test2
;EG-CHECK: CF_END
;SI-CHECK: @test2
;SI-CHECK-LABEL: @test2
;SI-CHECK: S_ENDPGM
define void @test2(<2 x i32> addrspace(1)* %out, <2 x i32> addrspace(1)* %in) {
@ -19,9 +32,9 @@ define void @test2(<2 x i32> addrspace(1)* %out, <2 x i32> addrspace(1)* %in) {
ret void
}
;EG-CHECK: @test4
;EG-CHECK-LABEL: @test4
;EG-CHECK: CF_END
;SI-CHECK: @test4
;SI-CHECK-LABEL: @test4
;SI-CHECK: S_ENDPGM
define void @test4(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in) {