Add the saving of S2. This is needed for some of the floating point

helper functions. This can be optimized out later when the remaining
parts of the helper function work is moved into the Mips16HardFloat pass.
For now it forces us to use the 32 bit save/restore instructions instead
of the 16 bit ones.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187712 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/Mips/Mips16FrameLowering.cpp b/lib/Target/Mips/Mips16FrameLowering.cpp
index 9fde614f30b2a5b00060bec139ed6d291687eba6..6655ff98e033f5f5b374ba5b65be5ead86a2cc87 100644 (file)
--- a/lib/Target/Mips/Mips16FrameLowering.cpp
+++ b/lib/Target/Mips/Mips16FrameLowering.cpp
@@ -56,11 +56,14 @@ void Mips16FrameLowering::emitPrologue(MachineFunction &MF) const {
   MCSymbol *CSLabel = MMI.getContext().CreateTempSymbol();
   BuildMI(MBB, MBBI, dl,
           TII.get(TargetOpcode::PROLOG_LABEL)).addSym(CSLabel);
+  unsigned S2 = MRI->getDwarfRegNum(Mips::S2, true);
+  MMI.addFrameInst(MCCFIInstruction::createOffset(CSLabel, S2, -8));
+
   unsigned S1 = MRI->getDwarfRegNum(Mips::S1, true);
-  MMI.addFrameInst(MCCFIInstruction::createOffset(CSLabel, S1, -8));
+  MMI.addFrameInst(MCCFIInstruction::createOffset(CSLabel, S1, -12));
 
   unsigned S0 = MRI->getDwarfRegNum(Mips::S0, true);
-  MMI.addFrameInst(MCCFIInstruction::createOffset(CSLabel, S0, -12));
+  MMI.addFrameInst(MCCFIInstruction::createOffset(CSLabel, S0, -16));
 
   unsigned RA = MRI->getDwarfRegNum(Mips::RA, true);
   MMI.addFrameInst(MCCFIInstruction::createOffset(CSLabel, RA, -4));
@@ -168,6 +171,7 @@ processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
   MF.getRegInfo().setPhysRegUsed(Mips::RA);
   MF.getRegInfo().setPhysRegUsed(Mips::S0);
   MF.getRegInfo().setPhysRegUsed(Mips::S1);
+  MF.getRegInfo().setPhysRegUsed(Mips::S2);
 }
 
 const MipsFrameLowering *

diff --git a/lib/Target/Mips/Mips16InstrInfo.td b/lib/Target/Mips/Mips16InstrInfo.td
index 3eac18fba363db508327e01062c762211cc99311..152fd4ca004a50c8ce445b220fa5e8e8a0db5467 100644 (file)
--- a/lib/Target/Mips/Mips16InstrInfo.td
+++ b/lib/Target/Mips/Mips16InstrInfo.td
@@ -884,9 +884,9 @@ def OrRxRxRy16: FRxRxRy16_ins<0b01101, "or", IIAlu>, ArithLogic16Defs<1>;
 let ra=1, s=0,s0=1,s1=1 in
 def RestoreRaF16:
   FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
-             "restore\t$$ra,  $$s0, $$s1, $frame_size", [], IILoad >, MayLoad {
+             "restore\t$$ra,  $$s0, $$s1, $$s2, $frame_size", [], IILoad >, MayLoad {
   let isCodeGenOnly = 1;
-  let Defs = [S0, S1, RA, SP];
+  let Defs = [S0, S1, S2, RA, SP];
   let Uses = [SP];
 }
 
@@ -912,9 +912,9 @@ def RestoreIncSpF16:
 let ra=1, s=1,s0=1,s1=1 in
 def SaveRaF16:
   FI8_SVRS16<0b1, (outs), (ins uimm16:$frame_size),
-             "save\t$$ra, $$s0, $$s1, $frame_size", [], IIStore >, MayStore {
+             "save\t$$ra, $$s0, $$s1, $$s2, $frame_size", [], IIStore >, MayStore {
   let isCodeGenOnly = 1;
-  let Uses = [RA, SP, S0, S1];
+  let Uses = [RA, SP, S0, S1, S2];
   let Defs = [SP];
 }
 

diff --git a/test/CodeGen/Mips/align16.ll b/test/CodeGen/Mips/align16.ll
index 815c84d0182f3952de3cf3941f503414284eea3f..267cff54291d004978741ac2b9db50e07eaa6711 100644 (file)
--- a/test/CodeGen/Mips/align16.ll
+++ b/test/CodeGen/Mips/align16.ll
@@ -25,7 +25,7 @@ entry:
   call void @p(i32* %arrayidx1)
   ret void
 }
-; 16:  save    $ra, $s0, $s1, 2040
-; 16:  addiu   $sp, -48 # 16 bit inst
-; 16:  addiu   $sp, 48 # 16 bit inst
-; 16:  restore $ra,  $s0, $s1, 2040
+; 16:  save    $ra, $s0, $s1, $s2, 2040
+; 16:  addiu   $sp, -56 # 16 bit inst
+; 16:  addiu   $sp, 56 # 16 bit inst
+; 16:  restore $ra,  $s0, $s1, $s2, 2040

diff --git a/test/CodeGen/Mips/alloca16.ll b/test/CodeGen/Mips/alloca16.ll
index 5ae9a847917bda3f289e7520438643d408b064e1..017665f00bd4631f213d8b4c6c6267008ad25539 100644 (file)
--- a/test/CodeGen/Mips/alloca16.ll
+++ b/test/CodeGen/Mips/alloca16.ll
@@ -19,8 +19,8 @@ entry:
 
 define void @test() nounwind {
 entry:
-; 16:  .frame  $16,24,$ra
-; 16:  save    $ra, $s0, $s1, 24
+; 16:  .frame  $sp,24,$ra
+; 16:  save    $ra, $s0, $s1, $s2, 24
 ; 16:  move    $16, $sp
 ; 16:  move    ${{[0-9]+}}, $sp
 ; 16:  subu    $[[REGISTER:[0-9]+]], ${{[0-9]+}}, ${{[0-9]+}}

diff --git a/test/CodeGen/Mips/ex2.ll b/test/CodeGen/Mips/ex2.ll
index 9f074d1ff9e23a370a573217a442843d1db6c9bc..c5535e7661a73b961e0cb91a9333c5ea83c53dde 100644 (file)
--- a/test/CodeGen/Mips/ex2.ll
+++ b/test/CodeGen/Mips/ex2.ll
@@ -6,10 +6,11 @@
 define i32 @main() {
 ; 16-LABEL: main:
 ; 16:  .cfi_startproc
-; 16:  save    $ra, $s0, $s1, 32
-; 16:   .cfi_def_cfa_offset 32
-; 16:   .cfi_offset 17, -8
-; 16:  .cfi_offset 16, -12
+; 16:  save    $ra, $s0, $s1, $s2, 40
+; 16:   .cfi_def_cfa_offset 40
+; 16:   .cfi_offset 18, -8
+; 16:   .cfi_offset 17, -12
+; 16:  .cfi_offset 16, -16
 ; 16:  .cfi_offset 31, -4
 ; 16:   .cfi_endproc
 entry:

diff --git a/test/CodeGen/Mips/helloworld.ll b/test/CodeGen/Mips/helloworld.ll
index 56ee60785f46b11cf9c95f51059bfac1c10beb97..83c88ae344180e8dcbf52cf895009dfd8a43426e 100644 (file)
--- a/test/CodeGen/Mips/helloworld.ll
+++ b/test/CodeGen/Mips/helloworld.ll
@@ -25,7 +25,7 @@ entry:
 ; SR32:  .set noreorder
 ; SR32:  .set nomacro
 ; SR32:  .set noat
-; SR:  save    $ra, $s0, $s1, [[FS:[0-9]+]]
+; SR:  save    $ra, $s0, $s1, $s2, [[FS:[0-9]+]]
 ; PE:  li      $[[T1:[0-9]+]], %hi(_gp_disp)
 ; PE:  addiu   $[[T2:[0-9]+]], $pc, %lo(_gp_disp)
 ; PE:  sll     $[[T3:[0-9]+]], $[[T1]], 16
@@ -35,7 +35,7 @@ entry:
 ; C2:  move    $25, ${{[0-9]+}}
 ; C1:  move    $gp, ${{[0-9]+}}
 ; C1:  jalrc   ${{[0-9]+}}
-; SR:  restore         $ra, $s0, $s1, [[FS]]
+; SR:  restore         $ra, $s0, $s1, $s2, [[FS]]
 ; PE:  li      $2, 0
 ; PE:  jrc     $ra
 

diff --git a/test/CodeGen/Mips/largefr1.ll b/test/CodeGen/Mips/largefr1.ll
index 89463274b8682377919a6b2e0464be4cfbb7b79f..9a5fd08d17acc23b2d6dab4a8209e471ca11abaf 100644 (file)
--- a/test/CodeGen/Mips/largefr1.ll
+++ b/test/CodeGen/Mips/largefr1.ll
@@ -24,15 +24,15 @@ entry:
 define i32 @main() nounwind {
 entry:
 ; 1-LABEL: main:
-; 1: 1:        .word   -797992
+; 1: 1:        .word   -798000
 ; 1:            lw ${{[0-9]+}}, 1f
 ; 1:            b 2f
 ; 1:            .align 2
-; 1:            .word  800016
+; 1:            .word  800020
 
 ; 1:            b 2f
 ; 1:            .align 2
-; 1:            .word  400016
+; 1:            .word  400020
 
 ; 1:            move ${{[0-9]+}}, $sp
 ; 1:            addu ${{[0-9]+}}, ${{[0-9]+}}, ${{[0-9]+}}
@@ -42,7 +42,7 @@ entry:
 
 ; 1:            b 2f
 ; 1:            .align 2
-; 1:            .word  400216
+; 1:            .word  400220
 
 ; 1:            move ${{[0-9]+}}, $sp
 ; 1:            addu ${{[0-9]+}}, ${{[0-9]+}}, ${{[0-9]+}}