Displaying 5 results from an estimated 5 matches for "lowerbr_jt".
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lowerbr_cc
2009 Feb 17
1
[LLVMdev] ARM backend playing with alternative jump table implementations
...#2
.POOL_ADDR:
.text .LJTI9_0_0:
.data
.LJTI9_0_0:
.long .LBB9_2
.long .LBB9_5
.long .LBB9_7
.long .LBB9_4
.long .LBB9_8
.text
The code for the lowering lives mostly in SDValue
ARMTargetLowering::LowerBR_JT
with some more heavy lifting done by ARMISD::WrapperJT
My attempts at this are marked in the code below.
My problem is to come up with the right item/value to put into the constant
pool.
SDValue ARMTargetLowering::LowerBR_JT(SDValue Op, SelectionDAG &DAG) {
SDValue Chain = Op.getOperand(0);...
2009 Jun 03
5
[LLVMdev] patch for llc/ARM: added mechanism to move switch tables from .text -> .data; also cleanup and documentation
...static bool CC_ARM_APCS_Custom_f64(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
CCValAssign::LocInfo &LocInfo,
ISD::ArgFlagsTy &ArgFlags,
@@ -1390,27 +1397,119 @@
return Res;
}
-SDValue ARMTargetLowering::LowerBR_JT(SDValue Op, SelectionDAG &DAG) {
+
+
+// Similar to LowerBR_JT_Inline except that the jumptable
+// is moved to the data segment.
+// This causes a extra load to access the table but keeps the
+// text segment small and avoids some issues with generating PIC
+// Needs to be activated with a com...
2009 Jun 11
0
[LLVMdev] patch for llc/ARM: added mechanism to move switch tables from .text -> .data; also cleanup and documentation
On Jun 8, 2009, at 2:42 PM, robert muth wrote:
> On Sun, Jun 7, 2009 at 11:53 PM, Evan Cheng <evan.cheng at apple.com>
> wrote:
>>
>> On Jun 7, 2009, at 6:59 AM, robert muth wrote:
>>
>>> On Sat, Jun 6, 2009 at 4:51 PM, Evan Cheng<evan.cheng at apple.com>
>>> wrote:
>>>> +cl::opt<std::string>
2009 Jun 08
2
[LLVMdev] patch for llc/ARM: added mechanism to move switch tables from .text -> .data; also cleanup and documentation
On Sun, Jun 7, 2009 at 11:53 PM, Evan Cheng <evan.cheng at apple.com> wrote:
>
> On Jun 7, 2009, at 6:59 AM, robert muth wrote:
>
>> On Sat, Jun 6, 2009 at 4:51 PM, Evan Cheng<evan.cheng at apple.com>
>> wrote:
>>> +cl::opt<std::string> FlagJumpTableSection("jumptable-section",
>>> +
2009 Jun 24
2
[LLVMdev] patch for llc/ARM: added mechanism to move switch tables from .text -> .data; also cleanup and documentation
...static bool CC_ARM_APCS_Custom_f64(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
CCValAssign::LocInfo &LocInfo,
ISD::ArgFlagsTy &ArgFlags,
@@ -1686,27 +1693,119 @@
return Res;
}
-SDValue ARMTargetLowering::LowerBR_JT(SDValue Op, SelectionDAG &DAG) {
+
+
+// Similar to LowerBR_JT_Inline except that the jumptable
+// is moved to the data segment.
+// This causes a extra load to access the table but keeps the
+// text segment small and avoids some issues with generating PIC
+// Needs to be activated with a com...