Akira Hatanaka 0285e7d1c1 When constant double 0.0 is lowered, make sure 0 is copied directly from an ...

integer register to a floating point register. It is not valid to interpret
the value of a floating pointer register as part of a double precision
floating point value after a single precision floating point computational
or move instruction stores its result to the register.

- In the test case, the following code is generated before this patch is
  applied:
mtc1  $zero, $f2    ; unformatted copy to $f2
mov.s $f0, $f2      ; $f0 is in single format
sdc1  $f12, 0($sp)
mov.s $f1, $f2      ; $f1 is in single format
c.eq.d  $f12, $f0   ; $f0 cannot be interpreted as double

- The following code is generated after this patch is applied:
mtc1  $zero, $f0    ; unformatted copy to $f0
mtc1  $zero, $f1    ; unformatted copy to $f1
c.eq.d  $f12, $f0   ; $f0 can be interpreted as double

Bhanu Chetlapalli and Chris Dearman at MIPS technologies reported this bug and
provided the test case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137484 91177308-0d34-0410-b5e6-96231b3b80d8

2011-08-12 18:09:59 +00:00

..

InstPrinter

Rewrite the CMake build to use explicit dependencies between libraries,

2011-07-29 00:14:25 +00:00

MCTargetDesc

Rewrite the CMake build to use explicit dependencies between libraries,

2011-07-29 00:14:25 +00:00

TargetInfo

Actually finish switching to the new system for Target sublibrary

2011-08-01 19:55:11 +00:00

CMakeLists.txt

Rewrite the CMake build to use explicit dependencies between libraries,

2011-07-29 00:14:25 +00:00

Makefile

Next round of MC refactoring. This patch factor MC table instantiations, MC

2011-07-14 20:59:42 +00:00

Mips.h

Added the infrastructute necessary for MIPS JIT support. Patch by Vladimir

2011-07-21 16:28:51 +00:00

Mips.td

Lower MachineInstr to MC Inst and print to .s files.

2011-07-07 23:56:50 +00:00

MipsAsmPrinter.cpp

Separate MCInstPrinter registration from AsmPrinter registration.

2011-07-25 21:20:24 +00:00

MipsAsmPrinter.h

Lower MachineInstr to MC Inst and print to .s files.

2011-07-07 23:56:50 +00:00

MipsCallingConv.td

Add A0 and A1 to the list of registers used for returning a value in order to

2011-06-21 01:28:11 +00:00

MipsCodeEmitter.cpp

Added the infrastructute necessary for MIPS JIT support. Patch by Vladimir

2011-07-21 16:28:51 +00:00

MipsDelaySlotFiller.cpp

- Rename TargetInstrDesc, TargetOperandInfo to MCInstrDesc and MCOperandInfo and

2011-06-28 19:10:37 +00:00

MipsEmitGPRestore.cpp

Reverse order of operands of address operand mem so that the base operand comes

2011-07-07 18:57:00 +00:00

MipsExpandPseudo.cpp

- Rename TargetInstrDesc, TargetOperandInfo to MCInstrDesc and MCOperandInfo and

2011-06-28 19:10:37 +00:00

MipsFrameLowering.cpp

Enclose directive .cprestore with .set macro and nomacro to silence assembler

2011-08-11 22:42:31 +00:00

MipsFrameLowering.h

Move getInitialFrameState from TargetFrameInfo to MCAsmInfo (suggestions for

2011-07-18 22:29:13 +00:00

MipsInstrFormats.td

Fix td file comments for Mips.

2011-05-09 18:16:46 +00:00

MipsInstrFPU.td

Use tabs to separate opcode and operand strings.

2011-06-07 18:16:51 +00:00

MipsInstrInfo.cpp

Next round of MC refactoring. This patch factor MC table instantiations, MC

2011-07-14 20:59:42 +00:00

MipsInstrInfo.h

Lower MachineInstr to MC Inst and print to .s files.

2011-07-07 23:56:50 +00:00

MipsInstrInfo.td

Add isIndirectBranch flag.

2011-08-11 21:05:37 +00:00

MipsISelDAGToDAG.cpp

When constant double 0.0 is lowered, make sure 0 is copied directly from an

2011-08-12 18:09:59 +00:00

MipsISelLowering.cpp

New approach to r136737: insert the necessary fences for atomic ops in platform-independent code, since a bunch of platforms (ARM, Mips, PPC, Alpha are the relevant targets here) need to do essentially the same thing.

2011-08-03 21:06:02 +00:00

MipsISelLowering.h

Code generation for 'fence' instruction.

2011-07-27 22:21:52 +00:00

MipsJITInfo.cpp

Added the infrastructute necessary for MIPS JIT support. Patch by Vladimir

2011-07-21 16:28:51 +00:00

MipsJITInfo.h

Added the infrastructute necessary for MIPS JIT support. Patch by Vladimir

2011-07-21 16:28:51 +00:00

MipsMachineFunction.h

Set mayLoad or mayStore flags for SC and LL in order to prevent LICM from

2011-07-18 18:52:12 +00:00

MipsMCInstLower.cpp

Raise assertion when MachineOperand has unexpected target flag.

2011-07-08 00:42:35 +00:00

MipsMCInstLower.h

Define class MipsMCInstLower.

2011-07-07 20:24:54 +00:00

MipsMCSymbolRefExpr.cpp

Define class MipsMCSymbolRefExpr.

2011-07-07 19:27:22 +00:00

MipsMCSymbolRefExpr.h

Define class MipsMCSymbolRefExpr.

2011-07-07 19:27:22 +00:00

MipsRegisterInfo.cpp

Move getInitialFrameState from TargetFrameInfo to MCAsmInfo (suggestions for

2011-07-18 22:29:13 +00:00

MipsRegisterInfo.h

Sink getDwarfRegNum, getLLVMRegNum, getSEHRegNum from TargetRegisterInfo down

2011-07-18 20:57:22 +00:00

MipsRegisterInfo.td

Use set operations instead of plain lists to enumerate register classes.

2011-06-15 23:28:14 +00:00

MipsRelocations.h

Added the infrastructute necessary for MIPS JIT support. Patch by Vladimir

2011-07-21 16:28:51 +00:00

MipsSchedule.td

Reverse unnecessary changes made in r129606 and r129608. There is no change in functionality.

2011-04-15 21:51:11 +00:00

MipsSelectionDAGInfo.cpp

Reverse unnecessary changes made in r129606 and r129608. There is no change in functionality.

2011-04-15 21:51:11 +00:00

MipsSelectionDAGInfo.h

Reverse unnecessary changes made in r129606 and r129608. There is no change in functionality.

2011-04-15 21:51:11 +00:00

MipsSubtarget.cpp

Next round of MC refactoring. This patch factor MC table instantiations, MC

2011-07-14 20:59:42 +00:00

MipsSubtarget.h

Compute feature bits at time of MCSubtargetInfo initialization.

2011-07-07 07:07:08 +00:00

MipsTargetMachine.cpp

Added the infrastructute necessary for MIPS JIT support. Patch by Vladimir

2011-07-21 16:28:51 +00:00

MipsTargetMachine.h

Added the infrastructute necessary for MIPS JIT support. Patch by Vladimir

2011-07-21 16:28:51 +00:00

MipsTargetObjectFile.cpp

land David Blaikie's patch to de-constify Type, with a few tweaks.

2011-07-18 04:54:35 +00:00

MipsTargetObjectFile.h

Reverse unnecessary changes made in r129606 and r129608. There is no change in functionality.

2011-04-15 21:51:11 +00:00