RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-18 18:42:46 +02:00
Code Issues Projects Releases Wiki Activity

BPF: emit an error message for unsupported signed division operation

Browse Source 
Signed-off-by: Yonghong Song <yhs@plumgrid.com>
Signed-off-by: Alexei Starovoitov <ast@fb.com>
llvm-svn: 263842
This commit is contained in:
Alexei Starovoitov 2016-03-18 22:02:47 +00:00
parent 6c2dfbbd43
commit 025ed59858
2 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
lib/Target/BPF/BPFISelDAGToDAG.cpp
View File

@ -130,6 +130,18 @@ SDNode *BPFDAGToDAGISel::Select(SDNode *Node) {
// tablegen selection should be handled here.
switch (Opcode) {
default: break;
case ISD::SDIV: {
DebugLoc Empty;
const DebugLoc &DL = Node->getDebugLoc();
if (DL != Empty)
errs() << "Error at line " << DL.getLine() << ": ";
else
errs() << "Error: ";
errs() << "Unsupport signed division for DAG: ";
Node->dump(CurDAG);
errs() << "Please convert to unsigned div/mod.\n";
break;
}
case ISD::INTRINSIC_W_CHAIN: {
unsigned IntNo = cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue();
switch (IntNo) {

9
test/CodeGen/BPF/sdiv_error.ll Normal file
View File

@ -0,0 +1,9 @@
; RUN: not llc -march=bpf < %s 2> %t1
; RUN: FileCheck %s < %t1
; CHECK: Unsupport signed division
; Function Attrs: norecurse nounwind readnone
define i32 @test(i32 %len) #0 {
%1 = srem i32 %len, 15
ret i32 %1
}