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Handle -mlong-calls on Hexagon 

Differential Revision:://reviews.llvm.org/D22766 

llvm-svn: 280089
This commit is contained in:
Krzysztof Parzyszek 2016-08-30 13:57:50 +00:00
parent 5c95ee4dd8
commit 1f26912e4c
4 changed files with 32 additions and 6 deletions
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8
clang/include/clang/Driver/Options.td
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@ -1388,6 +1388,10 @@ def malign_functions_EQ : Joined<["-"], "malign-functions=">, Group<clang_ignore
def malign_loops_EQ : Joined<["-"], "malign-loops=">, Group<clang_ignored_m_Group>;
def malign_jumps_EQ : Joined<["-"], "malign-jumps=">, Group<clang_ignored_m_Group>;
def mfancy_math_387 : Flag<["-"], "mfancy-math-387">, Group<clang_ignored_m_Group>;
def mlong_calls : Flag<["-"], "mlong-calls">, Group<m_Group>,
HelpText<"Generate branches with extended addressability, usually via indirect jumps.">;
def mno_long_calls : Flag<["-"], "mno-long-calls">, Group<m_Group>,
HelpText<"Restore the default behaviour of not generating long calls">;
def mtvos_version_min_EQ : Joined<["-"], "mtvos-version-min=">, Group<m_Group>;
def mappletvos_version_min_EQ : Joined<["-"], "mappletvos-version-min=">, Alias<mtvos_version_min_EQ>;
def mtvos_simulator_version_min_EQ : Joined<["-"], "mtvos-simulator-version-min=">, Alias<mtvos_version_min_EQ>;
@ -1532,10 +1536,6 @@ def mcrc : Flag<["-"], "mcrc">, Group<m_arm_Features_Group>,
HelpText<"Allow use of CRC instructions (ARM only)">;
def mnocrc : Flag<["-"], "mnocrc">, Group<m_arm_Features_Group>,
HelpText<"Disallow use of CRC instructions (ARM only)">;
def mlong_calls : Flag<["-"], "mlong-calls">, Group<m_arm_Features_Group>,
HelpText<"Generate an indirect jump to enable jumps further than 64M">;
def mno_long_calls : Flag<["-"], "mno-long-calls">, Group<m_arm_Features_Group>,
HelpText<"Restore the default behaviour of not generating long calls">;
def mgeneral_regs_only : Flag<["-"], "mgeneral-regs-only">, Group<m_aarch64_Features_Group>,
HelpText<"Generate code which only uses the general purpose registers (AArch64 only)">;

8
clang/lib/Basic/Targets.cpp
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@ -6109,6 +6109,7 @@ class HexagonTargetInfo : public TargetInfo {
static const TargetInfo::GCCRegAlias GCCRegAliases[];
std::string CPU;
bool HasHVX, HasHVXDouble;
bool UseLongCalls;
public:
HexagonTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
@ -6133,6 +6134,7 @@ public:
UseBitFieldTypeAlignment = true;
ZeroLengthBitfieldBoundary = 32;
HasHVX = HasHVXDouble = false;
UseLongCalls = false;
}
ArrayRef<Builtin::Info> getTargetBuiltins() const override {
@ -6167,6 +6169,7 @@ public:
.Case("hexagon", true)
.Case("hvx", HasHVX)
.Case("hvx-double", HasHVXDouble)
.Case("long-calls", UseLongCalls)
.Default(false);
}
@ -6256,6 +6259,9 @@ bool HexagonTargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
HasHVX = HasHVXDouble = true;
else if (F == "-hvx-double")
HasHVXDouble = false;
if (F == "+long-calls")
UseLongCalls = true;
}
return true;
}
@ -6266,11 +6272,11 @@ bool HexagonTargetInfo::initFeatureMap(llvm::StringMap<bool> &Features,
// Default for v60: -hvx, -hvx-double.
Features["hvx"] = false;
Features["hvx-double"] = false;
Features["long-calls"] = false;
return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
}
const char *const HexagonTargetInfo::GCCRegNames[] = {
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",

7
clang/lib/Driver/Tools.cpp
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@ -2484,7 +2484,7 @@ static void getAArch64TargetFeatures(const Driver &D, const ArgList &Args,
static void getHexagonTargetFeatures(const ArgList &Args,
std::vector<const char *> &Features) {
bool HasHVX = false, HasHVXD = false;
bool HasHVX = false, HasHVXD = false, UseLongCalls = false;
// FIXME: This should be able to use handleTargetFeaturesGroup except it is
// doing dependent option handling here rather than in initFeatureMap or a
@ -2499,6 +2499,10 @@ static void getHexagonTargetFeatures(const ArgList &Args,
HasHVXD = HasHVX = true;
else if (Opt.matches(options::OPT_mno_hexagon_hvx_double))
HasHVXD = false;
else if (Opt.matches(options::OPT_mlong_calls))
UseLongCalls = true;
else if (Opt.matches(options::OPT_mno_long_calls))
UseLongCalls = false;
else
continue;
A->claim();
@ -2506,6 +2510,7 @@ static void getHexagonTargetFeatures(const ArgList &Args,
Features.push_back(HasHVX ? "+hvx" : "-hvx");
Features.push_back(HasHVXD ? "+hvx-double" : "-hvx-double");
Features.push_back(UseLongCalls ? "+long-calls" : "-long-calls");
}
static void getWebAssemblyTargetFeatures(const ArgList &Args,

15
clang/test/Driver/hexagon-long-calls.c Normal file
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@ -0,0 +1,15 @@
// RUN: %clang -target hexagon -### %s 2>&1 \
// RUN: | FileCheck %s -check-prefix CHECK-DEFAULT
// RUN: %clang -target hexagon -### -mlong-calls %s 2>&1 \
// RUN: | FileCheck %s -check-prefix CHECK-LONG-CALLS
// RUN: %clang -target hexagon -### -mlong-calls -mno-long-calls %s 2>&1 \
// RUN: | FileCheck %s -check-prefix CHECK-NO-LONG-CALLS
// CHECK-DEFAULT-NOT: "-target-feature" "+long-calls"
// CHECK-LONG-CALLS: "-target-feature" "+long-calls"
// CHECK-NO-LONG-CALLS-NOT: "-target-feature" "+long-calls"