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Revert r276982 and r276984: [mips][fastisel] Handle 0-4 arguments without SelectionDAG
It seems that the stack offset in callabi.ll varies between machines. I'll look into it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276989 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Sanders
parent
1314c16889
commit
d1a7ed8d38
@ -31,9 +31,6 @@
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#include "llvm/IR/GlobalVariable.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Target/TargetInstrInfo.h"
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#include "llvm/Support/Debug.h"
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#define DEBUG_TYPE "mips-fastisel"
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using namespace llvm;
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@ -98,7 +95,6 @@ class MipsFastISel final : public FastISel {
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// Convenience variables to avoid some queries.
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LLVMContext *Context;
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bool fastLowerArguments() override;
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bool fastLowerCall(CallLoweringInfo &CLI) override;
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bool fastLowerIntrinsicCall(const IntrinsicInst *II) override;
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@ -1253,143 +1249,6 @@ bool MipsFastISel::finishCall(CallLoweringInfo &CLI, MVT RetVT,
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return true;
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}
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bool MipsFastISel::fastLowerArguments() {
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DEBUG(dbgs() << "fastLowerArguments\n");
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if (!FuncInfo.CanLowerReturn) {
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DEBUG(dbgs() << ".. gave up (!CanLowerReturn)\n");
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return false;
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}
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const Function *F = FuncInfo.Fn;
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if (F->isVarArg()) {
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DEBUG(dbgs() << ".. gave up (varargs)\n");
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return false;
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}
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CallingConv::ID CC = F->getCallingConv();
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if (CC != CallingConv::C) {
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DEBUG(dbgs() << ".. gave up (calling convention is not C)\n");
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return false;
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}
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static const MCPhysReg GPR32ArgRegs[] = {Mips::A0, Mips::A1, Mips::A2,
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Mips::A3};
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static const MCPhysReg FGR32ArgRegs[] = {Mips::F12, Mips::F14};
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static const MCPhysReg AFGR64ArgRegs[] = {Mips::D6, Mips::D7};
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struct AllocatedReg {
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const TargetRegisterClass *RC;
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unsigned Reg;
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AllocatedReg(const TargetRegisterClass *RC, unsigned Reg)
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: RC(RC), Reg(Reg) {}
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};
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// Only handle simple cases. i.e. Up to four integer arguments.
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// Supporting floating point significantly complicates things so we leave
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// that out for now.
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SmallVector<AllocatedReg, 4> Allocation;
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unsigned Idx = 1;
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bool HasAllocatedNonFGR = false;
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for (const auto &FormalArg : F->args()) {
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if (Idx > 4) {
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DEBUG(dbgs() << ".. gave up (too many arguments)\n");
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return false;
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}
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if (F->getAttributes().hasAttribute(Idx, Attribute::InReg) ||
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F->getAttributes().hasAttribute(Idx, Attribute::StructRet) ||
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F->getAttributes().hasAttribute(Idx, Attribute::ByVal)) {
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DEBUG(dbgs() << ".. gave up (inreg, structret, byval)\n");
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return false;
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}
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Type *ArgTy = FormalArg.getType();
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if (ArgTy->isStructTy() || ArgTy->isArrayTy() || ArgTy->isVectorTy()) {
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DEBUG(dbgs() << ".. gave up (struct, array, or vector)\n");
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return false;
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}
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EVT ArgVT = TLI.getValueType(DL, ArgTy);
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DEBUG(dbgs() << ".. " << (Idx - 1) << ": " << ArgVT.getEVTString() << "\n");
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if (!ArgVT.isSimple()) {
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DEBUG(dbgs() << ".. .. gave up (not a simple type)\n");
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return false;
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}
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switch (ArgVT.getSimpleVT().SimpleTy) {
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case MVT::i1:
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case MVT::i8:
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case MVT::i16:
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if (!F->getAttributes().hasAttribute(Idx, Attribute::SExt) &&
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!F->getAttributes().hasAttribute(Idx, Attribute::ZExt)) {
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// It must be any extend, this shouldn't happen for clang-generated IR
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// so just fall back on SelectionDAG.
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DEBUG(dbgs() << ".. .. gave up (i8/i16 arg is not extended)\n");
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return false;
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}
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DEBUG(dbgs() << ".. .. GPR32(" << GPR32ArgRegs[Idx - 1] << ")\n");
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Allocation.emplace_back(&Mips::GPR32RegClass, GPR32ArgRegs[Idx - 1]);
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HasAllocatedNonFGR = true;
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break;
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case MVT::i32:
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if (F->getAttributes().hasAttribute(Idx, Attribute::ZExt)) {
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// The O32 ABI does not permit a zero-extended i32.
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DEBUG(dbgs() << ".. .. gave up (i32 arg is zero extended)\n");
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return false;
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}
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DEBUG(dbgs() << ".. .. GPR32(" << GPR32ArgRegs[Idx - 1] << ")\n");
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Allocation.emplace_back(&Mips::GPR32RegClass, GPR32ArgRegs[Idx - 1]);
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HasAllocatedNonFGR = true;
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break;
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case MVT::f32:
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if (Idx > 2 || HasAllocatedNonFGR) {
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DEBUG(dbgs() << ".. .. gave up (f32 arg needed i32)\n");
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return false;
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} else {
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DEBUG(dbgs() << ".. .. FGR32(" << FGR32ArgRegs[Idx - 1] << ")\n");
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Allocation.emplace_back(&Mips::FGR32RegClass, FGR32ArgRegs[Idx - 1]);
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}
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break;
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case MVT::f64:
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if (Idx > 2 || HasAllocatedNonFGR) {
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DEBUG(dbgs() << ".. .. gave up (f64 arg needed 2xi32)\n");
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return false;
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} else {
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DEBUG(dbgs() << ".. .. AFGR64(" << AFGR64ArgRegs[Idx - 1] << ")\n");
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Allocation.emplace_back(&Mips::AFGR64RegClass, AFGR64ArgRegs[Idx - 1]);
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}
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break;
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default:
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DEBUG(dbgs() << ".. .. gave up (unknown type)\n");
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return false;
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}
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++Idx;
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}
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Idx = 0;
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for (const auto &FormalArg : F->args()) {
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unsigned SrcReg = Allocation[Idx].Reg;
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unsigned DstReg = FuncInfo.MF->addLiveIn(SrcReg, Allocation[Idx].RC);
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// FIXME: Unfortunately it's necessary to emit a copy from the livein copy.
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// Without this, EmitLiveInCopies may eliminate the livein if its only
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// use is a bitcast (which isn't turned into an instruction).
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unsigned ResultReg = createResultReg(Allocation[Idx].RC);
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BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc,
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TII.get(TargetOpcode::COPY), ResultReg)
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.addReg(DstReg, getKillRegState(true));
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updateValueMap(&FormalArg, ResultReg);
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++Idx;
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}
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return true;
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}
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bool MipsFastISel::fastLowerCall(CallLoweringInfo &CLI) {
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if (!TargetSupported)
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return false;
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@ -1,6 +1,6 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
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; RUN: < %s | FileCheck %s
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@b = global i32 1, align 4
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@ -1,8 +1,8 @@
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; RUN: llc < %s -march=mipsel -mcpu=mips32 -O0 -relocation-model=pic \
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; RUN: -fast-isel-abort=3 | FileCheck %s \
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; RUN: -fast-isel-abort=1 | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=32R1
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; RUN: llc < %s -march=mipsel -mcpu=mips32r2 -O0 -relocation-model=pic \
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; RUN: -fast-isel-abort=3 | FileCheck %s \
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; RUN: -fast-isel-abort=1 | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=32R2
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@a = global i16 -21829, align 2
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@ -1,8 +1,8 @@
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; RUN: llc -march=mipsel -mcpu=mips32 -O0 -relocation-model=pic \
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; RUN: -fast-isel-abort=3 -verify-machineinstrs < %s | \
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; RUN: -fast-isel-abort=1 -verify-machineinstrs < %s | \
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; RUN: FileCheck %s -check-prefixes=ALL,32R1
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; RUN: llc -march=mipsel -mcpu=mips32r2 -O0 -relocation-model=pic \
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; RUN: -fast-isel-abort=3 -verify-machineinstrs < %s | \
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; RUN: -fast-isel-abort=1 -verify-machineinstrs < %s | \
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; RUN: FileCheck %s -check-prefixes=ALL,32R2
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declare void @xb(i8)
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@ -1,7 +1,7 @@
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; RUN: llc -march=mipsel -mcpu=mips32 -relocation-model=pic \
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; RUN: -fast-isel=true -fast-isel-abort=3 < %s | FileCheck %s
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; RUN: -fast-isel=true -fast-isel-abort=1 < %s | FileCheck %s
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; RUN: llc -march=mipsel -mcpu=mips32r2 -relocation-model=pic \
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; RUN: -fast-isel=true -fast-isel-abort=3 < %s | FileCheck %s
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; RUN: -fast-isel=true -fast-isel-abort=1 < %s | FileCheck %s
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@ARR = external global [10 x i32], align 4
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@ -1,7 +1,7 @@
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; RUN: llc < %s -march=mipsel -mcpu=mips32 -O0 -relocation-model=pic \
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; RUN: -fast-isel-abort=3 | FileCheck %s
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; RUN: -fast-isel-abort=1 | FileCheck %s
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; RUN: llc < %s -march=mipsel -mcpu=mips32r2 -O0 -relocation-model=pic \
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; RUN: -fast-isel-abort=3 | FileCheck %s
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; RUN: -fast-isel-abort=1 | FileCheck %s
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@sj = global i32 200000, align 4
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@sk = global i32 -47, align 4
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@ -1,4 +1,4 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: < %s -verify-machineinstrs | FileCheck %s
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%struct.x = type { i32 }
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@ -1,6 +1,6 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: -verify-machineinstrs < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
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; RUN: -verify-machineinstrs < %s | FileCheck %s
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@f1 = common global float 0.000000e+00, align 4
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@ -1,6 +1,6 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
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; RUN: < %s | FileCheck %s
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@f = global float 0x40147E6B80000000, align 4
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@ -1,6 +1,6 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
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; RUN: < %s | FileCheck %s
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@ -1,6 +1,6 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
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; RUN: < %s | FileCheck %s
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@d = global double 0x40147E6B74DF0446, align 8
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@ -1,6 +1,6 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
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; RUN: < %s | FileCheck %s
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@c = global i32 4, align 4
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@ -4,9 +4,9 @@ target triple = "mips--linux-gnu"
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@c2 = common global i8 0, align 1
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@c1 = common global i8 0, align 1
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
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; RUN: < %s | FileCheck %s
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@s2 = common global i16 0, align 2
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@ -1,10 +1,10 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
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; RUN: < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: < %s | FileCheck %s -check-prefix=mips32r2
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
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; RUN: < %s | FileCheck %s -check-prefix=mips32
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@b2 = global i8 0, align 1
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@ -1,6 +1,6 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
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; RUN: < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
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; RUN: < %s | FileCheck %s
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@.str = private unnamed_addr constant [6 x i8] c"hello\00", align 1
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@ -1,5 +1,5 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 < %s | FileCheck %s
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 < %s | FileCheck %s
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@ub1 = common global i8 0, align 1
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@ub2 = common global i8 0, align 1
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@ -1,8 +1,8 @@
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; RUN: llc < %s -march=mipsel -mcpu=mips32 -O0 -relocation-model=pic \
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; RUN: -fast-isel-abort=3 -verify-machineinstrs | FileCheck %s \
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; RUN: -fast-isel-abort=1 -verify-machineinstrs | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=32R1
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; RUN: llc < %s -march=mipsel -mcpu=mips32r2 -O0 -relocation-model=pic \
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; RUN: -fast-isel-abort=3 -verify-machineinstrs | FileCheck %s \
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; RUN: -fast-isel-abort=1 -verify-machineinstrs | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=32R2
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@str = private unnamed_addr constant [12 x i8] c"hello there\00", align 1
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@ -1,6 +1,6 @@
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
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; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
|
||||
; Function Attrs: nounwind
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
|
||||
@x = common global [128000 x float] zeroinitializer, align 4
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
; RUN: llc < %s -march=mipsel -mcpu=mips32 -O0 -relocation-model=pic \
|
||||
; RUN: -fast-isel-abort=3 | FileCheck %s
|
||||
; RUN: -fast-isel-abort=1 | FileCheck %s
|
||||
; RUN: llc < %s -march=mipsel -mcpu=mips32r2 -O0 -relocation-model=pic \
|
||||
; RUN: -fast-isel-abort=3 | FileCheck %s
|
||||
; RUN: -fast-isel-abort=1 | FileCheck %s
|
||||
|
||||
@sj = global i32 200, align 4
|
||||
@sk = global i32 -47, align 4
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
|
||||
@i = global i32 75, align 4
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 \
|
||||
; RUN: -fast-isel-abort=3 -mcpu=mips32r2 < %s | FileCheck %s
|
||||
; RUN: -fast-isel-abort=1 -mcpu=mips32r2 < %s | FileCheck %s
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 \
|
||||
; RUN: -fast-isel-abort=3 -mcpu=mips32 < %s | FileCheck %s
|
||||
; RUN: -fast-isel-abort=1 -mcpu=mips32 < %s | FileCheck %s
|
||||
|
||||
@s1 = global i16 -89, align 2
|
||||
@s2 = global i16 4, align 2
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
|
||||
@abcd = external global i32
|
||||
|
||||
@ -1,10 +1,10 @@
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
|
||||
; RUN: < %s | FileCheck %s -check-prefix=mips32r2
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
|
||||
; RUN: < %s | FileCheck %s -check-prefix=mips32
|
||||
|
||||
@f = common global float 0.000000e+00, align 4
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32r2 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32r2 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=3 -mcpu=mips32 \
|
||||
; RUN: llc -march=mipsel -relocation-model=pic -O0 -fast-isel-abort=1 -mcpu=mips32 \
|
||||
; RUN: < %s | FileCheck %s
|
||||
|
||||
@ijk = external global i32
|
||||
|
||||
Loading…
Reference in New Issue
Block a user