[PostRASched] Breaking More CriticalAntiDeps

[arangasa]

Summary

The current version of CriticalAntiDepBreaker makes conservative decisions:

#1 If we see a definition of a register r, we set Classes[SuperReg(r)] = -1 in scan function conservatively. Later, in pre-scan function, for a register operand r of the current instruction, if Classes[a] is non-null, where a is an alias of r, then we set Classes[r] = -1, and prevent r getting renamed.

#2 We also initialize all aliases of live-out registers to be alive, even when they are never used in the program. This may prevent renaming of registers that overlap with such aliases.

This may result in the following missed opportunities: Assume r0 and r1 are subregisters of a super-register R0.

Case1: We may only rename the last definition of a register r0, which has a super-register.
Because its super-register will be marked as live after processing r0’s definition.
This will stop r0 getting renamed later, till R0 is really defined (when Classes[R0] will be set to nullptr).
Case 2: if r0 is defined after r1, then we can’t rename even the last definition of r1.
Because r0’s definition marks Classes[R0] = -1, which will prevent both r0 and r1 getting renamed.
Case 3: If r0 is live-in and live-out, and not modified in a basic block, and r1 participates in a CriticalAntiDependence, then that can’t be broken.
Because we initialize all super-regs of r0 (liveout) as live.
Case 4: We can’t use R0 for renaming a live-range that does not overlap with another subsequent live-range involving r0.

Case 1 is exercised, for instance, in v16f32_two_step function of llvm/test/CodeGen/X86/recip-fastmath.ll - The following anti-dep involving $ymm2 is not broken.

renamable $ymm0 = nnan ninf nsz arcp contract afn reassoc nofpexcept VFNMADDPS4Yrr killed renamable $ymm2, killed renamable $ymm0, renamable $ymm2, implicit $mxcsr //broken with ymm5 in this patch
renamable $ymm2 = nnan ninf nsz arcp contract afn reassoc VRCPPSYr renamable $ymm1

Case 4 is exercised in Part_Create function in llvm/test/CodeGen/X86/critical-anti-dep-breaker.ll
In the existing version, r10 is used to break the following anti-dependence. In the new version, rsi is used (rsi is considered before r10).
MOV64mr $rsp, 1, $noreg, 8, $noreg, killed renamable $rax :: (store 8 into %ir.Vchunk) // broken by rsi in this patch
renamable $rax = MOV64rm $rip, 1, $noreg, target-flags(x86-gotpcrel) @PartClass, $noreg :: (load 8 from got)

At a high level, this patch makes the following changes:

1. When we process a register’s definition, don’t update liveness info of aliased registers eagerly.
2. Keep liveness info separate for aliases as much as possible.
3. Be careful when choosing a free register for renaming, or when considering replacing a register, by considering liveness information of all aliases.

This patch updates the test cases as well, to account for the broken anti-dependencies.

[arangasa]

Fix iterator variable names.

[craig.topper]

llvm/test/CodeGen/X86/critical-anti-dep-breaker.ll

7

This comment still mentions R10, but the check line now uses RSI.

Probably best to regenerate the whole test with update_llc_test_checks.py and pre-commit it. Then rebase this patch to show how the whole function chagnes. Seeing only one instruction is hard to understand.

[arangasa]

llvm/test/CodeGen/X86/critical-anti-dep-breaker.ll

7

Thank you, Craig for your time and helpful inputs. https://reviews.llvm.org/D94904 is the updated test.

[arangasa]

Updated llvm/test/CodeGen/X86/critical-anti-dep-breaker.ll to show the whole test in https://reviews.llvm.org/D94215.

Rebasing this change on top of https://reviews.llvm.org/D94215.

[arangasa]

I tested this patch with the following SPEC 2006 benchmarks, with or without this patch on 11.0.0 release. This is the config I used for x86 target:

COPTIMIZE = -O2 -mllvm -stats -mllvm -break-anti-dependencies=critical -mllvm -post-RA-scheduler=1
CXXOPTIMIZE = -O2 -mllvm -stats -mllvm -break-anti-dependencies=critical -mllvm -post-RA-scheduler=1

Benchmarks tested: 401.bzip2 429.mcf 456.hmmer 458.sjeng 462.libquantum 464.h264ref 471.omnetpp 433.milc 444.namd 453.povray 470.lbm 482.sphinx3

The above are the benchmarks I could successfully compile and run in my setup with 11.0.0 (irrespective of whether this change is present or not).

I could see that this change results in 33% more broken antideps, when compared to the one without this change (5692 vs 4258).

[wxiao3]

Can you provide any performance data for SPEC? SPEC2017 is better than SPEC2006.

[arangasa]

The following SPEC2017 benchmarks were tested. In our setup, this patch results in 19% more antideps getting broken (116008 vs 97228). Baseline is llvm 11.0.0 release, and this patch was added to 11.0.0 release.
Exact flags used (with/without this patch): -O2 -mllvm -stats -mllvm -break-anti-dependencies=critical -mllvm -post-RA-scheduler=1.
Benchmarks: deepsjeng, gcc, imagick, lbm, leela, mcf, nab, namd, omnetpp, parest, perlbench, povray, x264, xalancbmk, xz.

[arangasa]

Rebase patch.

[wxiao3]

The broken antideps number looks good but how about the final impact to runtime performance?
Could you please provide SPEC2017 performance data such as rate (like https://reviews.llvm.org/D85368)?

llvm/lib/CodeGen/CriticalAntiDepBreaker.cpp

void CriticalAntiDepBreaker::StartBlock(MachineBasicBlock *BB) {
   KeepRegs.reset();
 
   bool IsReturnBlock = BB->isReturnBlock();
 
   // Examine the live-in regs of all successors.
   for (MachineBasicBlock::succ_iterator SI = BB->succ_begin(),
          SE = BB->succ_end(); SI != SE; ++SI)
     for (const auto &LI : (*SI)->liveins()) {
-      for (MCRegAliasIterator AI(LI.PhysReg, TRI, true); AI.isValid(); ++AI) {
-        unsigned Reg = *AI;
-        Classes[Reg] = reinterpret_cast<TargetRegisterClass *>(-1);
-        KillIndices[Reg] = BBSize;
-        DefIndices[Reg] = ~0u;
-      }
-    }
+      unsigned Reg = LI.PhysReg;
 
   // Mark live-out callee-saved registers. In a return block this is
   // all callee-saved registers. In non-return this is any
   // callee-saved register that is not saved in the prolog.
   const MachineFrameInfo &MFI = MF.getFrameInfo();
   BitVector Pristine = MFI.getPristineRegs(MF);
   for (const MCPhysReg *I = MF.getRegInfo().getCalleeSavedRegs(); *I;
        ++I) {
     unsigned Reg = *I;
     if (!IsReturnBlock && !Pristine.test(Reg))
       continue;
-    for (MCRegAliasIterator AI(*I, TRI, true); AI.isValid(); ++AI) {
-      unsigned Reg = *AI;
-      Classes[Reg] = reinterpret_cast<TargetRegisterClass *>(-1);
-      KillIndices[Reg] = BBSize;
-      DefIndices[Reg] = ~0u;
-    }
-  }
-}
 
 void CriticalAntiDepBreaker::FinishBlock() {
   RegRefs.clear();
   KeepRegs.reset();
 }
 
 void CriticalAntiDepBreaker::Observe(MachineInstr &MI, unsigned Count,
                                      unsigned InsertPosIndex) {
for (unsigned i = 0, e = MI.getNumOperands(); i != e; ++i) {
         unsigned SubregReg = *SRI;
         DefIndices[SubregReg] = Count;
         KillIndices[SubregReg] = ~0u;
         Classes[SubregReg] = nullptr;
         RegRefs.erase(SubregReg);
         if (!Keep)
           KeepRegs.reset(SubregReg);
       }
-      // Conservatively mark super-registers as unusable.
-      for (MCSuperRegIterator SR(Reg, TRI); SR.isValid(); ++SR)
-        Classes[*SR] = reinterpret_cast<TargetRegisterClass *>(-1);
     }
   }
   for (unsigned i = 0, e = MI.getNumOperands(); i != e; ++i) {
     MachineOperand &MO = MI.getOperand(i);
     if (!MO.isReg()) continue;
     Register Reg = MO.getReg();
     if (Reg == 0) continue;
     if (!MO.isUse()) continue;
 
     const TargetRegisterClass *NewRC = nullptr;
     if (i < MI.getDesc().getNumOperands())
       NewRC = TII->getRegClass(MI.getDesc(), i, TRI, MF);
 
     // For now, only allow the register to be changed if its register
     // class is consistent across all uses.
     if (!Classes[Reg] && NewRC)
       Classes[Reg] = NewRC;
     else if (!NewRC || Classes[Reg] != NewRC)
       Classes[Reg] = reinterpret_cast<TargetRegisterClass *>(-1);
 
     RegRefs.insert(std::make_pair(Reg, &MO));
 
     // It wasn't previously live but now it is, this is a kill.
-    // Repeat for all aliases.
-    for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI) {
-      unsigned AliasReg = *AI;
-      if (KillIndices[AliasReg] == ~0u) {
-        KillIndices[AliasReg] = Count;
-        DefIndices[AliasReg] = ~0u;
-      }
+    if (KillIndices[Reg] == ~0u) {
+      KillIndices[Reg] = Count;
+      DefIndices[Reg] = ~0u;
     }
   }
 }
 
 // Check all machine operands that reference the antidependent register and must
 // be replaced by NewReg. Return true if any of their parent instructions may
 // clobber the new register.
 //
for (unsigned i = 0; i != Order.size(); ++i) {
     if (NewReg == AntiDepReg) continue;
     // Don't replace a register with one that was recently used to repair
     // an anti-dependence with this AntiDepReg, because that would
     // re-introduce that anti-dependence.
     if (NewReg == LastNewReg) continue;
     // If any instructions that define AntiDepReg also define the NewReg, it's
     // not suitable.  For example, Instruction with multiple definitions can
     // result in this condition.
-    if (isNewRegClobberedByRefs(RegRefBegin, RegRefEnd, NewReg)) continue;
-    // If NewReg is dead and NewReg's most recent def is not before
-    // AntiDepReg's kill, it's safe to replace AntiDepReg with NewReg.
+    bool NewRegAliasClobberedByRefs = false;
+    for (MCRegAliasIterator AI(NewReg, TRI, true); AI.isValid(); ++AI) {
+      unsigned AliasReg = *AI;
+      if (isNewRegClobberedByRefs(RegRefBegin, RegRefEnd, AliasReg)) {
+        NewRegAliasClobberedByRefs = true;
+        break;
+      }
+    }
+    if (NewRegAliasClobberedByRefs)
+      continue;
     assert(((KillIndices[AntiDepReg] == ~0u) != (DefIndices[AntiDepReg] == ~0u))
            && "Kill and Def maps aren't consistent for AntiDepReg!");
-    assert(((KillIndices[NewReg] == ~0u) != (DefIndices[NewReg] == ~0u))
-           && "Kill and Def maps aren't consistent for NewReg!");
-    if (KillIndices[NewReg] != ~0u ||
-        Classes[NewReg] == reinterpret_cast<TargetRegisterClass *>(-1) ||
-        KillIndices[AntiDepReg] > DefIndices[NewReg])
-      continue;
+    bool Suitable = true;
+    for (MCRegAliasIterator AI(NewReg, TRI, true); AI.isValid(); ++AI) {
+      unsigned AliasReg = *AI;
+      // If every alias of NewReg is dead and most recent def of that alias
+      // is not before AntiDepReg's kill (so the alias and AntiDepReg aren't
+      // both live at any program point), it's safe to replace AntiDepReg
+      // with NewReg.
+      assert(
+          ((KillIndices[AliasReg] == ~0u) != (DefIndices[AliasReg] == ~0u)) &&
+          "Kill and Def maps aren't consistent for alias of NewReg!");
+      if (KillIndices[AliasReg] != ~0u || // Alias Live
+                                          // Alias used implicitly
+          Classes[AliasReg] == reinterpret_cast<TargetRegisterClass *>(-1) ||
+          // both Alias and AntiDepReg are live at a program point
+          KillIndices[AntiDepReg] > DefIndices[AliasReg]) {
+        Suitable = false;
+        break;
+      }
       // If NewReg overlaps any of the forbidden registers, we can't use it.
       bool Forbidden = false;
       for (SmallVectorImpl<unsigned>::iterator it = Forbid.begin(),
-           ite = Forbid.end(); it != ite; ++it)
-      if (TRI->regsOverlap(NewReg, *it)) {
+                                               ite = Forbid.end();
+           it != ite; ++it)
+        if (TRI->regsOverlap(AliasReg, *it)) {
           Forbidden = true;
           break;
         }
-    if (Forbidden) continue;
+      if (Forbidden) {
+        Suitable = false;
+        break;
+      }
+    }
+    if (!Suitable)
+      continue;
     return NewReg;
   }
 
   // No registers are free and available!
   return 0;
 }
 
 unsigned CriticalAntiDepBreaker::

llvm/test/CodeGen/X86/critical-anti-dep-breaker.ll

 ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -relocation-model=pic -post-RA-scheduler=1 -break-anti-dependencies=critical  | FileCheck %s
 
 ; PR20308 ( http://llvm.org/bugs/show_bug.cgi?id=20308 )
 ; The critical-anti-dependency-breaker must not use register def information from a kill inst.
 ; This test case expects such an instruction to appear as a comment with def info for RDI.
 ; There is an anti-dependency (WAR) hazard using RAX using default reg allocation and scheduling.
 ; The post-RA-scheduler and critical-anti-dependency breaker can eliminate that hazard using R10.
 ; That is the first free register that isn't used as a param in the call to "@Image".
 
 @PartClass = external global i32
 @NullToken = external global i64
 
 ; CHECK-LABEL: Part_Create:
-; CHECK: movq PartClass@GOTPCREL(%rip), %r10
+; CHECK: movq PartClass@GOTPCREL(%rip), %rsi
 define i32 @Part_Create(i64* %Anchor, i32 %TypeNum, i32 %F, i32 %Z, i32* %Status, i64* %PartTkn) {
   %PartObj = alloca i64*, align 8
   %Vchunk = alloca i64, align 8
   %1 = load i64, i64* @NullToken, align 4
   store i64 %1, i64* %Vchunk, align 8
   %2 = load i32, i32* @PartClass, align 4
   call i32 @Image(i64* %Anchor, i32 %2, i32 0, i32 0, i32* %Status, i64* %PartTkn, i64** %PartObj)
   call i32 @Create(i64* %Anchor)
   ret i32 %2
 }
 
 declare i32 @Image(i64*, i32, i32, i32, i32*, i64*, i64**)
 declare i32 @Create(i64*)

llvm/test/CodeGen/X86/fma.ll

 ; FMACALL32_BDVER2-NEXT:    vmovss {{[0-9]+}}(%esp), %xmm0 ## encoding: [0xc5,0xfa,0x10,0x44,0x24,0x3c]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0],zero,zero,zero
 ; FMACALL32_BDVER2-NEXT:    vinsertps $16, {{[0-9]+}}(%esp), %xmm0, %xmm0 ## encoding: [0xc4,0xe3,0x79,0x21,0x44,0x24,0x38,0x10]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = xmm0[0],mem[0],xmm0[2,3]
 ; FMACALL32_BDVER2-NEXT:    vmovss {{[0-9]+}}(%esp), %xmm1 ## encoding: [0xc5,0xfa,0x10,0x4c,0x24,0x2c]
 ; FMACALL32_BDVER2-NEXT:    ## xmm1 = mem[0],zero,zero,zero
 ; FMACALL32_BDVER2-NEXT:    vinsertps $16, {{[0-9]+}}(%esp), %xmm1, %xmm1 ## encoding: [0xc4,0xe3,0x71,0x21,0x4c,0x24,0x28,0x10]
 ; FMACALL32_BDVER2-NEXT:    ## xmm1 = xmm1[0],mem[0],xmm1[2,3]
-; FMACALL32_BDVER2-NEXT:    vmovss {{[0-9]+}}(%esp), %xmm2 ## encoding: [0xc5,0xfa,0x10,0x54,0x24,0x4c]
+; FMACALL32_BDVER2-NEXT:    vmovss {{[0-9]+}}(%esp), %xmm2 ## encoding: [0xc5,0xfa,0x10,0x54,0x24,0x5c]
 ; FMACALL32_BDVER2-NEXT:    ## xmm2 = mem[0],zero,zero,zero
-; FMACALL32_BDVER2-NEXT:    vinsertps $16, {{[0-9]+}}(%esp), %xmm2, %xmm2 ## encoding: [0xc4,0xe3,0x69,0x21,0x54,0x24,0x48,0x10]
-; FMACALL32_BDVER2-NEXT:    ## xmm2 = xmm2[0],mem[0],xmm2[2,3]
 ; FMACALL32_BDVER2-NEXT:    vinsertps $32, {{[0-9]+}}(%esp), %xmm0, %xmm0 ## encoding: [0xc4,0xe3,0x79,0x21,0x44,0x24,0x34,0x20]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = xmm0[0,1],mem[0],xmm0[3]
 ; FMACALL32_BDVER2-NEXT:    vinsertps $32, {{[0-9]+}}(%esp), %xmm1, %xmm1 ## encoding: [0xc4,0xe3,0x71,0x21,0x4c,0x24,0x24,0x20]
 ; FMACALL32_BDVER2-NEXT:    ## xmm1 = xmm1[0,1],mem[0],xmm1[3]
-; FMACALL32_BDVER2-NEXT:    vinsertps $32, {{[0-9]+}}(%esp), %xmm2, %xmm2 ## encoding: [0xc4,0xe3,0x69,0x21,0x54,0x24,0x44,0x20]
-; FMACALL32_BDVER2-NEXT:    ## xmm2 = xmm2[0,1],mem[0],xmm2[3]
 ; FMACALL32_BDVER2-NEXT:    vinsertps $48, {{[0-9]+}}(%esp), %xmm0, %xmm0 ## encoding: [0xc4,0xe3,0x79,0x21,0x44,0x24,0x30,0x30]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = xmm0[0,1,2],mem[0]
 ; FMACALL32_BDVER2-NEXT:    vinsertps $48, {{[0-9]+}}(%esp), %xmm1, %xmm1 ## encoding: [0xc4,0xe3,0x71,0x21,0x4c,0x24,0x20,0x30]
 ; FMACALL32_BDVER2-NEXT:    ## xmm1 = xmm1[0,1,2],mem[0]
-; FMACALL32_BDVER2-NEXT:    vinsertps $48, {{[0-9]+}}(%esp), %xmm2, %xmm2 ## encoding: [0xc4,0xe3,0x69,0x21,0x54,0x24,0x40,0x30]
-; FMACALL32_BDVER2-NEXT:    ## xmm2 = xmm2[0,1,2],mem[0]
 ; FMACALL32_BDVER2-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0 ## encoding: [0xc4,0xe3,0x7d,0x18,0xc1,0x01]
-; FMACALL32_BDVER2-NEXT:    vmovss {{[0-9]+}}(%esp), %xmm1 ## encoding: [0xc5,0xfa,0x10,0x4c,0x24,0x5c]
-; FMACALL32_BDVER2-NEXT:    ## xmm1 = mem[0],zero,zero,zero
-; FMACALL32_BDVER2-NEXT:    vinsertps $16, {{[0-9]+}}(%esp), %xmm1, %xmm1 ## encoding: [0xc4,0xe3,0x71,0x21,0x4c,0x24,0x58,0x10]
-; FMACALL32_BDVER2-NEXT:    ## xmm1 = xmm1[0],mem[0],xmm1[2,3]
+; FMACALL32_BDVER2-NEXT:    vinsertps $16, {{[0-9]+}}(%esp), %xmm2, %xmm1 ## encoding: [0xc4,0xe3,0x69,0x21,0x4c,0x24,0x58,0x10]
+; FMACALL32_BDVER2-NEXT:    ## xmm1 = xmm2[0],mem[0],xmm2[2,3]
+; FMACALL32_BDVER2-NEXT:    vmovss {{[0-9]+}}(%esp), %xmm2 ## encoding: [0xc5,0xfa,0x10,0x54,0x24,0x4c]
+; FMACALL32_BDVER2-NEXT:    ## xmm2 = mem[0],zero,zero,zero
+; FMACALL32_BDVER2-NEXT:    vinsertps $16, {{[0-9]+}}(%esp), %xmm2, %xmm2 ## encoding: [0xc4,0xe3,0x69,0x21,0x54,0x24,0x48,0x10]
+; FMACALL32_BDVER2-NEXT:    ## xmm2 = xmm2[0],mem[0],xmm2[2,3]
 ; FMACALL32_BDVER2-NEXT:    vinsertps $32, {{[0-9]+}}(%esp), %xmm1, %xmm1 ## encoding: [0xc4,0xe3,0x71,0x21,0x4c,0x24,0x54,0x20]
 ; FMACALL32_BDVER2-NEXT:    ## xmm1 = xmm1[0,1],mem[0],xmm1[3]
+; FMACALL32_BDVER2-NEXT:    vinsertps $32, {{[0-9]+}}(%esp), %xmm2, %xmm2 ## encoding: [0xc4,0xe3,0x69,0x21,0x54,0x24,0x44,0x20]
+; FMACALL32_BDVER2-NEXT:    ## xmm2 = xmm2[0,1],mem[0],xmm2[3]
 ; FMACALL32_BDVER2-NEXT:    vinsertps $48, {{[0-9]+}}(%esp), %xmm1, %xmm1 ## encoding: [0xc4,0xe3,0x71,0x21,0x4c,0x24,0x50,0x30]
 ; FMACALL32_BDVER2-NEXT:    ## xmm1 = xmm1[0,1,2],mem[0]
+; FMACALL32_BDVER2-NEXT:    vinsertps $48, {{[0-9]+}}(%esp), %xmm2, %xmm2 ## encoding: [0xc4,0xe3,0x69,0x21,0x54,0x24,0x40,0x30]
+; FMACALL32_BDVER2-NEXT:    ## xmm2 = xmm2[0,1,2],mem[0]
 ; FMACALL32_BDVER2-NEXT:    vinsertf128 $1, %xmm2, %ymm1, %ymm1 ## encoding: [0xc4,0xe3,0x75,0x18,0xca,0x01]
 ; FMACALL32_BDVER2-NEXT:    movl %ebp, %esp ## encoding: [0x89,0xec]
 ; FMACALL32_BDVER2-NEXT:    popl %ebp ## encoding: [0x5d]
 ; FMACALL32_BDVER2-NEXT:    retl ## encoding: [0xc3]
 entry:
   %call = call <16 x float> @llvm.fma.v16f32(<16 x float> %a, <16 x float> %b, <16 x float> %c)
   ret <16 x float> %call
 }

 ; FMACALL32_BDVER2-NEXT:    vmovaps %xmm1, {{[-0-9]+}}(%e{{[sb]}}p) ## 16-byte Spill
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x29,0x4c,0x24,0x40]
 ; FMACALL32_BDVER2-NEXT:    vmovlps %xmm2, {{[0-9]+}}(%esp) ## encoding: [0xc5,0xf8,0x13,0x54,0x24,0x10]
 ; FMACALL32_BDVER2-NEXT:    vmovups %xmm0, (%esp) ## encoding: [0xc5,0xf8,0x11,0x04,0x24]
 ; FMACALL32_BDVER2-NEXT:    calll _fma ## encoding: [0xe8,A,A,A,A]
 ; FMACALL32_BDVER2-NEXT:    ## fixup A - offset: 1, value: _fma-4, kind: FK_PCRel_4
 ; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 ## 16-byte Reload
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x28,0x44,0x24,0x30]
+; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm1 ## 16-byte Reload
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x28,0x4c,0x24,0x40]
 ; FMACALL32_BDVER2-NEXT:    vmovhps %xmm0, {{[0-9]+}}(%esp) ## encoding: [0xc5,0xf8,0x17,0x44,0x24,0x10]
-; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 ## 16-byte Reload
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x28,0x44,0x24,0x40]
-; FMACALL32_BDVER2-NEXT:    vmovlps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0, %xmm0 ## 16-byte Folded Reload
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x12,0x44,0x24,0x58]
-; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0,1],xmm0[2,3]
+; FMACALL32_BDVER2-NEXT:    vmovlps {{[-0-9]+}}(%e{{[sb]}}p), %xmm1, %xmm0 ## 16-byte Folded Reload
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf0,0x12,0x44,0x24,0x58]
+; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0,1],xmm1[2,3]
 ; FMACALL32_BDVER2-NEXT:    vmovups %xmm0, (%esp) ## encoding: [0xc5,0xf8,0x11,0x04,0x24]
 ; FMACALL32_BDVER2-NEXT:    fstpl {{[0-9]+}}(%esp) ## encoding: [0xdd,0x5c,0x24,0x28]
 ; FMACALL32_BDVER2-NEXT:    calll _fma ## encoding: [0xe8,A,A,A,A]
 ; FMACALL32_BDVER2-NEXT:    ## fixup A - offset: 1, value: _fma-4, kind: FK_PCRel_4
 ; FMACALL32_BDVER2-NEXT:    fstpl {{[0-9]+}}(%esp) ## encoding: [0xdd,0x5c,0x24,0x20]
 ; FMACALL32_BDVER2-NEXT:    vmovsd {{[0-9]+}}(%esp), %xmm0 ## encoding: [0xc5,0xfb,0x10,0x44,0x24,0x28]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0],zero
 ; FMACALL32_BDVER2-NEXT:    vmovhps {{[0-9]+}}(%esp), %xmm0, %xmm0 ## encoding: [0xc5,0xf8,0x16,0x44,0x24,0x20]

 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf9,0x14,0x84,0x24,0xa0,0x00,0x00,0x00]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = xmm0[0],mem[0]
 ; FMACALL32_BDVER2-NEXT:    vmovups %xmm0, (%esp) ## encoding: [0xc5,0xf8,0x11,0x04,0x24]
 ; FMACALL32_BDVER2-NEXT:    vzeroupper ## encoding: [0xc5,0xf8,0x77]
 ; FMACALL32_BDVER2-NEXT:    calll _fma ## encoding: [0xe8,A,A,A,A]
 ; FMACALL32_BDVER2-NEXT:    ## fixup A - offset: 1, value: _fma-4, kind: FK_PCRel_4
 ; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 ## 16-byte Reload
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x28,0x44,0x24,0x70]
+; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm1 ## 16-byte Reload
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x28,0x4c,0x24,0x50]
 ; FMACALL32_BDVER2-NEXT:    vmovhps %xmm0, {{[0-9]+}}(%esp) ## encoding: [0xc5,0xf8,0x17,0x44,0x24,0x10]
-; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 ## 16-byte Reload
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x28,0x44,0x24,0x50]
-; FMACALL32_BDVER2-NEXT:    vmovlps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0, %xmm0 ## 16-byte Folded Reload
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x12,0x44,0x24,0x68]
-; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0,1],xmm0[2,3]
+; FMACALL32_BDVER2-NEXT:    vmovlps {{[-0-9]+}}(%e{{[sb]}}p), %xmm1, %xmm0 ## 16-byte Folded Reload
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf0,0x12,0x44,0x24,0x68]
+; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0,1],xmm1[2,3]
 ; FMACALL32_BDVER2-NEXT:    vmovups %xmm0, (%esp) ## encoding: [0xc5,0xf8,0x11,0x04,0x24]
 ; FMACALL32_BDVER2-NEXT:    fstpl {{[0-9]+}}(%esp) ## encoding: [0xdd,0x5c,0x24,0x30]
 ; FMACALL32_BDVER2-NEXT:    fldt {{[-0-9]+}}(%e{{[sb]}}p) ## 10-byte Folded Reload
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xdb,0x6c,0x24,0x38]
 ; FMACALL32_BDVER2-NEXT:    fstpl {{[0-9]+}}(%esp) ## encoding: [0xdd,0x5c,0x24,0x28]
 ; FMACALL32_BDVER2-NEXT:    fldt {{[-0-9]+}}(%e{{[sb]}}p) ## 10-byte Folded Reload
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xdb,0x6c,0x24,0x44]
 ; FMACALL32_BDVER2-NEXT:    fstpl {{[0-9]+}}(%esp) ## encoding: [0xdd,0x5c,0x24,0x20]

 ;
 ; FMACALL32_BDVER2-LABEL: test_v8f64:
 ; FMACALL32_BDVER2:       ## %bb.0: ## %entry
 ; FMACALL32_BDVER2-NEXT:    pushl %ebp ## encoding: [0x55]
 ; FMACALL32_BDVER2-NEXT:    movl %esp, %ebp ## encoding: [0x89,0xe5]
 ; FMACALL32_BDVER2-NEXT:    andl $-32, %esp ## encoding: [0x83,0xe4,0xe0]
 ; FMACALL32_BDVER2-NEXT:    subl $352, %esp ## encoding: [0x81,0xec,0x60,0x01,0x00,0x00]
 ; FMACALL32_BDVER2-NEXT:    ## imm = 0x160
-; FMACALL32_BDVER2-NEXT:    vmovaps %ymm0, {{[-0-9]+}}(%e{{[sb]}}p) ## 32-byte Spill
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xfc,0x29,0x84,0x24,0xe0,0x00,0x00,0x00]
-; FMACALL32_BDVER2-NEXT:    vmovsd 56(%ebp), %xmm0 ## encoding: [0xc5,0xfb,0x10,0x45,0x38]
-; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0],zero
 ; FMACALL32_BDVER2-NEXT:    vmovaps %ymm2, {{[-0-9]+}}(%e{{[sb]}}p) ## 32-byte Spill
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xfc,0x29,0x94,0x24,0x00,0x01,0x00,0x00]
-; FMACALL32_BDVER2-NEXT:    vextractf128 $1, %ymm3, %xmm2 ## encoding: [0xc4,0xe3,0x7d,0x19,0xda,0x01]
-; FMACALL32_BDVER2-NEXT:    vmovaps %ymm3, {{[-0-9]+}}(%e{{[sb]}}p) ## 32-byte Spill
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xfc,0x29,0x9c,0x24,0xc0,0x00,0x00,0x00]
+; FMACALL32_BDVER2-NEXT:    vmovsd 56(%ebp), %xmm2 ## encoding: [0xc5,0xfb,0x10,0x55,0x38]
+; FMACALL32_BDVER2-NEXT:    ## xmm2 = mem[0],zero
 ; FMACALL32_BDVER2-NEXT:    vmovaps %ymm1, {{[-0-9]+}}(%e{{[sb]}}p) ## 32-byte Spill
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xfc,0x29,0x8c,0x24,0xa0,0x00,0x00,0x00]
+; FMACALL32_BDVER2-NEXT:    vextractf128 $1, %ymm1, %xmm1 ## encoding: [0xc4,0xe3,0x7d,0x19,0xc9,0x01]
+; FMACALL32_BDVER2-NEXT:    vmovaps %ymm0, {{[-0-9]+}}(%e{{[sb]}}p) ## 32-byte Spill
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xfc,0x29,0x84,0x24,0xe0,0x00,0x00,0x00]
+; FMACALL32_BDVER2-NEXT:    vmovaps %ymm3, {{[-0-9]+}}(%e{{[sb]}}p) ## 32-byte Spill
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xfc,0x29,0x9c,0x24,0xc0,0x00,0x00,0x00]
+; FMACALL32_BDVER2-NEXT:    vmovaps %xmm1, {{[-0-9]+}}(%e{{[sb]}}p) ## 16-byte Spill
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x29,0x8c,0x24,0x40,0x01,0x00,0x00]
+; FMACALL32_BDVER2-NEXT:    vmovsd %xmm2, {{[0-9]+}}(%esp) ## encoding: [0xc5,0xfb,0x11,0x54,0x24,0x10]
+; FMACALL32_BDVER2-NEXT:    vextractf128 $1, %ymm3, %xmm2 ## encoding: [0xc4,0xe3,0x7d,0x19,0xda,0x01]
+; FMACALL32_BDVER2-NEXT:    vmovlhps %xmm2, %xmm1, %xmm0 ## encoding: [0xc5,0xf0,0x16,0xc2]
+; FMACALL32_BDVER2-NEXT:    ## xmm0 = xmm1[0],xmm2[0]
 ; FMACALL32_BDVER2-NEXT:    vmovaps %xmm2, {{[-0-9]+}}(%e{{[sb]}}p) ## 16-byte Spill
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x29,0x94,0x24,0x30,0x01,0x00,0x00]
-; FMACALL32_BDVER2-NEXT:    vmovsd %xmm0, {{[0-9]+}}(%esp) ## encoding: [0xc5,0xfb,0x11,0x44,0x24,0x10]
-; FMACALL32_BDVER2-NEXT:    vextractf128 $1, %ymm1, %xmm0 ## encoding: [0xc4,0xe3,0x7d,0x19,0xc8,0x01]
-; FMACALL32_BDVER2-NEXT:    vmovaps %xmm0, {{[-0-9]+}}(%e{{[sb]}}p) ## 16-byte Spill
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x29,0x84,0x24,0x40,0x01,0x00,0x00]
-; FMACALL32_BDVER2-NEXT:    vmovlhps %xmm2, %xmm0, %xmm0 ## encoding: [0xc5,0xf8,0x16,0xc2]
-; FMACALL32_BDVER2-NEXT:    ## xmm0 = xmm0[0],xmm2[0]
 ; FMACALL32_BDVER2-NEXT:    vmovups %xmm0, (%esp) ## encoding: [0xc5,0xf8,0x11,0x04,0x24]
 ; FMACALL32_BDVER2-NEXT:    vzeroupper ## encoding: [0xc5,0xf8,0x77]
 ; FMACALL32_BDVER2-NEXT:    calll _fma ## encoding: [0xe8,A,A,A,A]
 ; FMACALL32_BDVER2-NEXT:    ## fixup A - offset: 1, value: _fma-4, kind: FK_PCRel_4
 ; FMACALL32_BDVER2-NEXT:    vmovsd 48(%ebp), %xmm0 ## encoding: [0xc5,0xfb,0x10,0x45,0x30]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0],zero
 ; FMACALL32_BDVER2-NEXT:    fstpt {{[-0-9]+}}(%e{{[sb]}}p) ## 10-byte Folded Spill
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xdb,0xbc,0x24,0x94,0x00,0x00,0x00]

 ; FMACALL32_BDVER2-NEXT:    vmovups %xmm0, (%esp) ## encoding: [0xc5,0xf8,0x11,0x04,0x24]
 ; FMACALL32_BDVER2-NEXT:    vzeroupper ## encoding: [0xc5,0xf8,0x77]
 ; FMACALL32_BDVER2-NEXT:    calll _fma ## encoding: [0xe8,A,A,A,A]
 ; FMACALL32_BDVER2-NEXT:    ## fixup A - offset: 1, value: _fma-4, kind: FK_PCRel_4
 ; FMACALL32_BDVER2-NEXT:    vmovsd 32(%ebp), %xmm0 ## encoding: [0xc5,0xfb,0x10,0x45,0x20]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0],zero
 ; FMACALL32_BDVER2-NEXT:    fstpt {{[-0-9]+}}(%e{{[sb]}}p) ## 10-byte Folded Spill
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xdb,0xbc,0x24,0xc0,0x00,0x00,0x00]
+; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %ymm1 ## 32-byte Reload
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xfc,0x28,0x8c,0x24,0x00,0x01,0x00,0x00]
 ; FMACALL32_BDVER2-NEXT:    vmovsd %xmm0, {{[0-9]+}}(%esp) ## encoding: [0xc5,0xfb,0x11,0x44,0x24,0x10]
 ; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %ymm0 ## 32-byte Reload
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xfc,0x28,0x84,0x24,0x00,0x01,0x00,0x00]
-; FMACALL32_BDVER2-NEXT:    vextractf128 $1, %ymm0, %xmm1 ## encoding: [0xc4,0xe3,0x7d,0x19,0xc1,0x01]
-; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %ymm0 ## 32-byte Reload
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xfc,0x28,0x84,0x24,0xe0,0x00,0x00,0x00]
+; FMACALL32_BDVER2-NEXT:    vextractf128 $1, %ymm1, %xmm1 ## encoding: [0xc4,0xe3,0x7d,0x19,0xc9,0x01]
 ; FMACALL32_BDVER2-NEXT:    vmovaps %xmm1, {{[-0-9]+}}(%e{{[sb]}}p) ## 16-byte Spill
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x29,0x4c,0x24,0x20]
 ; FMACALL32_BDVER2-NEXT:    vextractf128 $1, %ymm0, %xmm0 ## encoding: [0xc4,0xe3,0x7d,0x19,0xc0,0x01]
 ; FMACALL32_BDVER2-NEXT:    vmovaps %xmm0, {{[-0-9]+}}(%e{{[sb]}}p) ## 16-byte Spill
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x29,0x44,0x24,0x30]
 ; FMACALL32_BDVER2-NEXT:    vunpckhpd %xmm1, %xmm0, %xmm0 ## encoding: [0xc5,0xf9,0x15,0xc1]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = xmm0[1],xmm1[1]
 ; FMACALL32_BDVER2-NEXT:    vmovups %xmm0, (%esp) ## encoding: [0xc5,0xf8,0x11,0x04,0x24]
 ; FMACALL32_BDVER2-NEXT:    vzeroupper ## encoding: [0xc5,0xf8,0x77]
 ; FMACALL32_BDVER2-NEXT:    calll _fma ## encoding: [0xe8,A,A,A,A]
 ; FMACALL32_BDVER2-NEXT:    ## fixup A - offset: 1, value: _fma-4, kind: FK_PCRel_4
 ; FMACALL32_BDVER2-NEXT:    vmovsd 24(%ebp), %xmm0 ## encoding: [0xc5,0xfb,0x10,0x45,0x18]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0],zero
 ; FMACALL32_BDVER2-NEXT:    fstpt {{[-0-9]+}}(%e{{[sb]}}p) ## 10-byte Folded Spill
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xdb,0xbc,0x24,0xa0,0x00,0x00,0x00]
+; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm1 ## 16-byte Reload
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x28,0x4c,0x24,0x30]
 ; FMACALL32_BDVER2-NEXT:    vmovsd %xmm0, {{[0-9]+}}(%esp) ## encoding: [0xc5,0xfb,0x11,0x44,0x24,0x10]
-; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 ## 16-byte Reload
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x28,0x44,0x24,0x30]
-; FMACALL32_BDVER2-NEXT:    vunpcklpd {{[-0-9]+}}(%e{{[sb]}}p), %xmm0, %xmm0 ## 16-byte Folded Reload
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf9,0x14,0x44,0x24,0x20]
-; FMACALL32_BDVER2-NEXT:    ## xmm0 = xmm0[0],mem[0]
+; FMACALL32_BDVER2-NEXT:    vunpcklpd {{[-0-9]+}}(%e{{[sb]}}p), %xmm1, %xmm0 ## 16-byte Folded Reload
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf1,0x14,0x44,0x24,0x20]
+; FMACALL32_BDVER2-NEXT:    ## xmm0 = xmm1[0],mem[0]
 ; FMACALL32_BDVER2-NEXT:    vmovups %xmm0, (%esp) ## encoding: [0xc5,0xf8,0x11,0x04,0x24]
 ; FMACALL32_BDVER2-NEXT:    calll _fma ## encoding: [0xe8,A,A,A,A]
 ; FMACALL32_BDVER2-NEXT:    ## fixup A - offset: 1, value: _fma-4, kind: FK_PCRel_4
 ; FMACALL32_BDVER2-NEXT:    vmovsd 16(%ebp), %xmm0 ## encoding: [0xc5,0xfb,0x10,0x45,0x10]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0],zero
 ; FMACALL32_BDVER2-NEXT:    fstpt {{[-0-9]+}}(%e{{[sb]}}p) ## 10-byte Folded Spill
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xdb,0x7c,0x24,0x30]
 ; FMACALL32_BDVER2-NEXT:    vmovsd %xmm0, {{[0-9]+}}(%esp) ## encoding: [0xc5,0xfb,0x11,0x44,0x24,0x10]

 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf9,0x14,0x84,0x24,0x00,0x01,0x00,0x00]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = xmm0[0],mem[0]
 ; FMACALL32_BDVER2-NEXT:    vmovups %xmm0, (%esp) ## encoding: [0xc5,0xf8,0x11,0x04,0x24]
 ; FMACALL32_BDVER2-NEXT:    vzeroupper ## encoding: [0xc5,0xf8,0x77]
 ; FMACALL32_BDVER2-NEXT:    calll _fma ## encoding: [0xe8,A,A,A,A]
 ; FMACALL32_BDVER2-NEXT:    ## fixup A - offset: 1, value: _fma-4, kind: FK_PCRel_4
 ; FMACALL32_BDVER2-NEXT:    vmovsd 64(%ebp), %xmm0 ## encoding: [0xc5,0xfb,0x10,0x45,0x40]
 ; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0],zero
+; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm1 ## 16-byte Reload
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x28,0x8c,0x24,0x30,0x01,0x00,0x00]
 ; FMACALL32_BDVER2-NEXT:    vmovsd %xmm0, {{[0-9]+}}(%esp) ## encoding: [0xc5,0xfb,0x11,0x44,0x24,0x10]
-; FMACALL32_BDVER2-NEXT:    vmovaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 ## 16-byte Reload
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x28,0x84,0x24,0x30,0x01,0x00,0x00]
-; FMACALL32_BDVER2-NEXT:    vmovlps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0, %xmm0 ## 16-byte Folded Reload
-; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf8,0x12,0x84,0x24,0x48,0x01,0x00,0x00]
-; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0,1],xmm0[2,3]
+; FMACALL32_BDVER2-NEXT:    vmovlps {{[-0-9]+}}(%e{{[sb]}}p), %xmm1, %xmm0 ## 16-byte Folded Reload
+; FMACALL32_BDVER2-NEXT:    ## encoding: [0xc5,0xf0,0x12,0x84,0x24,0x48,0x01,0x00,0x00]
+; FMACALL32_BDVER2-NEXT:    ## xmm0 = mem[0,1],xmm1[2,3]
 ; FMACALL32_BDVER2-NEXT:    vmovups %xmm0, (%esp) ## encoding: [0xc5,0xf8,0x11,0x04,0x24]
 ; FMACALL32_BDVER2-NEXT:    fstpl {{[0-9]+}}(%esp) ## encoding: [0xdd,0x5c,0x24,0x60]
 ; FMACALL32_BDVER2-NEXT:    fldt {{[-0-9]+}}(%e{{[sb]}}p) ## 10-byte Folded Reload
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xdb,0x6c,0x24,0x20]
 ; FMACALL32_BDVER2-NEXT:    fstpl {{[0-9]+}}(%esp) ## encoding: [0xdd,0x5c,0x24,0x58]
 ; FMACALL32_BDVER2-NEXT:    fldt {{[-0-9]+}}(%e{{[sb]}}p) ## 10-byte Folded Reload
 ; FMACALL32_BDVER2-NEXT:    ## encoding: [0xdb,0x6c,0x24,0x30]
 ; FMACALL32_BDVER2-NEXT:    fstpl {{[0-9]+}}(%esp) ## encoding: [0xdd,0x5c,0x24,0x50]

llvm/test/CodeGen/X86/recip-fastmath.ll

 ; FMA-RECIP-NEXT:    vfmsub213ps {{.*#+}} ymm1 = (ymm4 * ymm1) - ymm3
 ; FMA-RECIP-NEXT:    vfnmadd132ps {{.*#+}} ymm1 = -(ymm1 * ymm4) + ymm4
 ; FMA-RECIP-NEXT:    retq
 ;
 ; BDVER2-LABEL: v16f32_two_step:
 ; BDVER2:       # %bb.0:
 ; BDVER2-NEXT:    vrcpps %ymm0, %ymm2
 ; BDVER2-NEXT:    vmovaps {{.*#+}} ymm3 = [1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0]
+; BDVER2-NEXT:    vrcpps %ymm1, %ymm5
 ; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm4 = (ymm0 * ymm2) - ymm3
 ; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm2 = -(ymm2 * ymm4) + ymm2
+; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm4 = (ymm1 * ymm5) - ymm3
 ; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm0 = (ymm0 * ymm2) - ymm3
 ; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm0 = -(ymm2 * ymm0) + ymm2
-; BDVER2-NEXT:    vrcpps %ymm1, %ymm2
-; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm4 = (ymm1 * ymm2) - ymm3
-; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm2 = -(ymm2 * ymm4) + ymm2
+; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm2 = -(ymm5 * ymm4) + ymm5
 ; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm1 = (ymm1 * ymm2) - ymm3
 ; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm1 = -(ymm2 * ymm1) + ymm2
 ; BDVER2-NEXT:    retq
 ;
 ; BTVER2-LABEL: v16f32_two_step:
 ; BTVER2:       # %bb.0:
 ; BTVER2-NEXT:    vmovaps {{.*#+}} ymm4 = [1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0]
 ; BTVER2-NEXT:    vrcpps %ymm0, %ymm2
+; BTVER2-NEXT:    vrcpps %ymm1, %ymm5
 ; BTVER2-NEXT:    vmulps %ymm2, %ymm0, %ymm3
 ; BTVER2-NEXT:    vsubps %ymm3, %ymm4, %ymm3
 ; BTVER2-NEXT:    vmulps %ymm3, %ymm2, %ymm3
 ; BTVER2-NEXT:    vaddps %ymm3, %ymm2, %ymm2
+; BTVER2-NEXT:    vmulps %ymm5, %ymm1, %ymm3
+; BTVER2-NEXT:    vsubps %ymm3, %ymm4, %ymm3
 ; BTVER2-NEXT:    vmulps %ymm2, %ymm0, %ymm0
 ; BTVER2-NEXT:    vsubps %ymm0, %ymm4, %ymm0
+; BTVER2-NEXT:    vmulps %ymm3, %ymm5, %ymm3
 ; BTVER2-NEXT:    vmulps %ymm0, %ymm2, %ymm0
 ; BTVER2-NEXT:    vaddps %ymm0, %ymm2, %ymm0
-; BTVER2-NEXT:    vrcpps %ymm1, %ymm2
-; BTVER2-NEXT:    vmulps %ymm2, %ymm1, %ymm3
-; BTVER2-NEXT:    vsubps %ymm3, %ymm4, %ymm3
-; BTVER2-NEXT:    vmulps %ymm3, %ymm2, %ymm3
-; BTVER2-NEXT:    vaddps %ymm3, %ymm2, %ymm2
+; BTVER2-NEXT:    vaddps %ymm3, %ymm5, %ymm2
 ; BTVER2-NEXT:    vmulps %ymm2, %ymm1, %ymm1
 ; BTVER2-NEXT:    vsubps %ymm1, %ymm4, %ymm1
 ; BTVER2-NEXT:    vmulps %ymm1, %ymm2, %ymm1
 ; BTVER2-NEXT:    vaddps %ymm1, %ymm2, %ymm1
 ; BTVER2-NEXT:    retq
 ;
 ; SANDY-LABEL: v16f32_two_step:
 ; SANDY:       # %bb.0:

llvm/test/CodeGen/X86/recip-fastmath2.ll

 ; FMA-RECIP-NEXT:    vmulps %ymm0, %ymm3, %ymm0
 ; FMA-RECIP-NEXT:    vmulps %ymm1, %ymm2, %ymm1
 ; FMA-RECIP-NEXT:    retq
 ;
 ; BDVER2-LABEL: v16f32_one_step_2_divs:
 ; BDVER2:       # %bb.0:
 ; BDVER2-NEXT:    vrcpps %ymm0, %ymm2
 ; BDVER2-NEXT:    vmovaps {{.*#+}} ymm3 = [1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0]
+; BDVER2-NEXT:    vrcpps %ymm1, %ymm4
 ; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm0 = (ymm0 * ymm2) - ymm3
+; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm1 = (ymm1 * ymm4) - ymm3
 ; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm0 = -(ymm2 * ymm0) + ymm2
-; BDVER2-NEXT:    vrcpps %ymm1, %ymm2
-; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm1 = (ymm1 * ymm2) - ymm3
 ; BDVER2-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm3
-; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm1 = -(ymm2 * ymm1) + ymm2
+; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm1 = -(ymm4 * ymm1) + ymm4
 ; BDVER2-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm2
 ; BDVER2-NEXT:    vmulps %ymm0, %ymm3, %ymm0
 ; BDVER2-NEXT:    vmulps %ymm1, %ymm2, %ymm1
 ; BDVER2-NEXT:    retq
 ;
 ; BTVER2-LABEL: v16f32_one_step_2_divs:
 ; BTVER2:       # %bb.0:
 ; BTVER2-NEXT:    vmovaps {{.*#+}} ymm3 = [1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0]
 ; BTVER2-NEXT:    vrcpps %ymm0, %ymm2
+; BTVER2-NEXT:    vrcpps %ymm1, %ymm4
 ; BTVER2-NEXT:    vmulps %ymm2, %ymm0, %ymm0
+; BTVER2-NEXT:    vmulps %ymm4, %ymm1, %ymm1
 ; BTVER2-NEXT:    vsubps %ymm0, %ymm3, %ymm0
+; BTVER2-NEXT:    vsubps %ymm1, %ymm3, %ymm1
 ; BTVER2-NEXT:    vmulps %ymm0, %ymm2, %ymm0
+; BTVER2-NEXT:    vmulps %ymm1, %ymm4, %ymm1
 ; BTVER2-NEXT:    vaddps %ymm0, %ymm2, %ymm0
-; BTVER2-NEXT:    vrcpps %ymm1, %ymm2
-; BTVER2-NEXT:    vmulps %ymm2, %ymm1, %ymm1
-; BTVER2-NEXT:    vsubps %ymm1, %ymm3, %ymm1
 ; BTVER2-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm3
-; BTVER2-NEXT:    vmulps %ymm1, %ymm2, %ymm1
-; BTVER2-NEXT:    vaddps %ymm1, %ymm2, %ymm1
+; BTVER2-NEXT:    vaddps %ymm1, %ymm4, %ymm1
 ; BTVER2-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm2
 ; BTVER2-NEXT:    vmulps %ymm0, %ymm3, %ymm0
 ; BTVER2-NEXT:    vmulps %ymm1, %ymm2, %ymm1
 ; BTVER2-NEXT:    retq
 ;
 ; SANDY-LABEL: v16f32_one_step_2_divs:
 ; SANDY:       # %bb.0:
 ; SANDY-NEXT:    vrcpps %ymm0, %ymm2

 ; FMA-RECIP-NEXT:    vfmsub213ps {{.*#+}} ymm1 = (ymm4 * ymm1) - ymm2
 ; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm3 * ymm1) + ymm4
 ; FMA-RECIP-NEXT:    retq
 ;
 ; BDVER2-LABEL: v16f32_two_step2:
 ; BDVER2:       # %bb.0:
 ; BDVER2-NEXT:    vrcpps %ymm0, %ymm2
 ; BDVER2-NEXT:    vmovaps {{.*#+}} ymm3 = [1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0]
+; BDVER2-NEXT:    vmovaps {{.*#+}} ymm6 = [1.0E+0,2.0E+0,3.0E+0,4.0E+0,5.0E+0,6.0E+0,7.0E+0,8.0E+0]
 ; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm4 = (ymm0 * ymm2) - ymm3
 ; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm2 = -(ymm2 * ymm4) + ymm2
-; BDVER2-NEXT:    vmovaps {{.*#+}} ymm4 = [1.0E+0,2.0E+0,3.0E+0,4.0E+0,5.0E+0,6.0E+0,7.0E+0,8.0E+0]
-; BDVER2-NEXT:    vmulps %ymm4, %ymm2, %ymm5
-; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm0 = (ymm0 * ymm5) - ymm4
+; BDVER2-NEXT:    vrcpps %ymm1, %ymm4
+; BDVER2-NEXT:    vmulps %ymm6, %ymm2, %ymm5
+; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm3 = (ymm1 * ymm4) - ymm3
+; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm0 = (ymm0 * ymm5) - ymm6
 ; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm0 = -(ymm2 * ymm0) + ymm5
-; BDVER2-NEXT:    vrcpps %ymm1, %ymm2
+; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm2 = -(ymm4 * ymm3) + ymm4
 ; BDVER2-NEXT:    vmovaps {{.*#+}} ymm5 = [9.0E+0,1.0E+1,1.1E+1,1.2E+1,1.3E+1,1.4E+1,1.5E+1,1.6E+1]
-; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm3 = (ymm1 * ymm2) - ymm3
-; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm2 = -(ymm2 * ymm3) + ymm2
 ; BDVER2-NEXT:    vmulps %ymm5, %ymm2, %ymm4
 ; BDVER2-NEXT:    vfmsubps {{.*#+}} ymm1 = (ymm1 * ymm4) - ymm5
 ; BDVER2-NEXT:    vfnmaddps {{.*#+}} ymm1 = -(ymm2 * ymm1) + ymm4
 ; BDVER2-NEXT:    retq
 ;
 ; BTVER2-LABEL: v16f32_two_step2:
 ; BTVER2:       # %bb.0:
 ; BTVER2-NEXT:    vmovaps {{.*#+}} ymm4 = [1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0,1.0E+0]
 ; BTVER2-NEXT:    vrcpps %ymm0, %ymm2
+; BTVER2-NEXT:    vmovaps {{.*#+}} ymm6 = [1.0E+0,2.0E+0,3.0E+0,4.0E+0,5.0E+0,6.0E+0,7.0E+0,8.0E+0]
 ; BTVER2-NEXT:    vmulps %ymm2, %ymm0, %ymm3
 ; BTVER2-NEXT:    vsubps %ymm3, %ymm4, %ymm3
 ; BTVER2-NEXT:    vmulps %ymm3, %ymm2, %ymm3
 ; BTVER2-NEXT:    vaddps %ymm3, %ymm2, %ymm2
-; BTVER2-NEXT:    vmovaps {{.*#+}} ymm3 = [1.0E+0,2.0E+0,3.0E+0,4.0E+0,5.0E+0,6.0E+0,7.0E+0,8.0E+0]
-; BTVER2-NEXT:    vmulps %ymm3, %ymm2, %ymm5
+; BTVER2-NEXT:    vmulps %ymm6, %ymm2, %ymm5
 ; BTVER2-NEXT:    vmulps %ymm5, %ymm0, %ymm0
-; BTVER2-NEXT:    vsubps %ymm0, %ymm3, %ymm0
+; BTVER2-NEXT:    vsubps %ymm0, %ymm6, %ymm0
 ; BTVER2-NEXT:    vmulps %ymm0, %ymm2, %ymm0
-; BTVER2-NEXT:    vrcpps %ymm1, %ymm2
-; BTVER2-NEXT:    vmulps %ymm2, %ymm1, %ymm3
 ; BTVER2-NEXT:    vaddps %ymm0, %ymm5, %ymm0
-; BTVER2-NEXT:    vmovaps {{.*#+}} ymm5 = [9.0E+0,1.0E+1,1.1E+1,1.2E+1,1.3E+1,1.4E+1,1.5E+1,1.6E+1]
+; BTVER2-NEXT:    vrcpps %ymm1, %ymm5
+; BTVER2-NEXT:    vmulps %ymm5, %ymm1, %ymm3
 ; BTVER2-NEXT:    vsubps %ymm3, %ymm4, %ymm3
-; BTVER2-NEXT:    vmulps %ymm3, %ymm2, %ymm3
-; BTVER2-NEXT:    vaddps %ymm3, %ymm2, %ymm2
+; BTVER2-NEXT:    vmulps %ymm3, %ymm5, %ymm3
+; BTVER2-NEXT:    vaddps %ymm3, %ymm5, %ymm2
+; BTVER2-NEXT:    vmovaps {{.*#+}} ymm5 = [9.0E+0,1.0E+1,1.1E+1,1.2E+1,1.3E+1,1.4E+1,1.5E+1,1.6E+1]
 ; BTVER2-NEXT:    vmulps %ymm5, %ymm2, %ymm4
 ; BTVER2-NEXT:    vmulps %ymm4, %ymm1, %ymm1
 ; BTVER2-NEXT:    vsubps %ymm1, %ymm5, %ymm1
 ; BTVER2-NEXT:    vmulps %ymm1, %ymm2, %ymm1
 ; BTVER2-NEXT:    vaddps %ymm1, %ymm4, %ymm1
 ; BTVER2-NEXT:    retq
 ;
 ; SANDY-LABEL: v16f32_two_step2: