[llvm] r259039 - [mips][microMIPS] Disable FastISel for microMIPS

[Zoran Jovanovic via llvm-commits]

Author: zjovanovic
Date: Thu Jan 28 05:08:03 2016
New Revision: 259039

URL: http://llvm.org/viewvc/llvm-project?rev=259039&view=rev
Log:
[mips][microMIPS] Disable FastISel for microMIPS

Author: milena.vujosevic.janicic
Reviewers: dsanders

FastIsel is not supported for microMIPS, thus it needs to be disabled. 
Test micromips-zero-mat-uses.ll is deleted since the tested sequence of instructions is not generated for microMIPS without FastISel.
Differential Revision: http://reviews.llvm.org/D15892

Removed:
    llvm/trunk/test/CodeGen/Mips/micromips-zero-mat-uses.ll
Modified:
    llvm/trunk/lib/Target/Mips/MipsFastISel.cpp
    llvm/trunk/test/CodeGen/Mips/Fast-ISel/check-disabled-mcpus.ll

Modified: llvm/trunk/lib/Target/Mips/MipsFastISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsFastISel.cpp?rev=259039&r1=259038&r2=259039&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MipsFastISel.cpp (original)
+++ llvm/trunk/lib/Target/Mips/MipsFastISel.cpp Thu Jan 28 05:08:03 2016
@@ -192,7 +192,8 @@ public:
         TII(*Subtarget->getInstrInfo()), TLI(*Subtarget->getTargetLowering()) {
     MFI = funcInfo.MF->getInfo<MipsFunctionInfo>();
     Context = &funcInfo.Fn->getContext();
-    bool ISASupported = !Subtarget->hasMips32r6() && Subtarget->hasMips32();
+    bool ISASupported = !Subtarget->hasMips32r6() &&
+                        !Subtarget->inMicroMipsMode() && Subtarget->hasMips32();
     TargetSupported =
         ISASupported && (TM.getRelocationModel() == Reloc::PIC_) &&
         (static_cast<const MipsTargetMachine &>(TM).getABI().IsO32());

Modified: llvm/trunk/test/CodeGen/Mips/Fast-ISel/check-disabled-mcpus.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/Mips/Fast-ISel/check-disabled-mcpus.ll?rev=259039&r1=259038&r2=259039&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/Mips/Fast-ISel/check-disabled-mcpus.ll (original)
+++ llvm/trunk/test/CodeGen/Mips/Fast-ISel/check-disabled-mcpus.ll Thu Jan 28 05:08:03 2016
@@ -7,6 +7,8 @@
 
 ; RUN: llc -march=mips -mcpu=mips32r6 -O0 -relocation-model=pic \
 ; RUN:     -fast-isel-verbose <%s 2>&1 | FileCheck %s
+; RUN: llc -march=mips -mcpu=mips32r2 -mattr=+micromips -O0 -relocation-model=pic \
+; RUN:     -fast-isel-verbose <%s 2>&1 | FileCheck %s
 
 ; RUN: llc -march=mips -mcpu=mips64 -O0 -relocation-model=pic \
 ; RUN:     -fast-isel-verbose <%s 2>&1 | FileCheck %s

Removed: llvm/trunk/test/CodeGen/Mips/micromips-zero-mat-uses.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/Mips/micromips-zero-mat-uses.ll?rev=259038&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/Mips/micromips-zero-mat-uses.ll (original)
+++ llvm/trunk/test/CodeGen/Mips/micromips-zero-mat-uses.ll (removed)
@@ -1,8 +0,0 @@
-; RUN: llc -march=mips -mcpu=mips32r2 -mattr=+micromips,+nooddspreg -O0 < %s | FileCheck %s
-
-; CHECK: addiu    $[[R0:[0-9]+]], $zero, 0
-; CHECK: subu16   $2, $[[R0]], ${{[0-9]+}}
-define i32 @foo() {
-  %1 = sub i32 0, undef
-  ret i32 %1
-}