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authorDan Gohman <gohman@apple.com>2009-01-26 22:22:31 +0000
committerDan Gohman <gohman@apple.com>2009-01-26 22:22:31 +0000
commit92f4f16a19c8d5edafad700a22e76eb2f22b4b31 (patch)
tree6306359f110f764371aedcf268049e6e710e8b56 /lib/Target/TargetMachine.cpp
parent609eef258fb9cb2491109abf12d4c307e05294ae (diff)
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Implement Red Zone utilization on x86-64. This is currently
disabled by default; I'll enable it when I hook it up with the llvm-gcc flag which controls it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63056 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/TargetMachine.cpp')
-rw-r--r--lib/Target/TargetMachine.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index a1d6fa7eb9..fd577c7438 100644
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -40,6 +40,7 @@ namespace llvm {
bool VerboseAsm;
bool DisableJumpTables;
bool StrongPHIElim;
+ bool DisableRedZone;
}
static cl::opt<bool, true> PrintCode("print-machineinstrs",
@@ -164,6 +165,12 @@ EnableStrongPHIElim(cl::Hidden, "strong-phi-elim",
cl::location(StrongPHIElim),
cl::init(false));
+static cl::opt<bool, true>
+DisableRedZoneOption("disable-red-zone",
+ cl::desc("Do not emit code that uses the red zone."),
+ cl::location(DisableRedZone),
+ cl::init(true));
+
//---------------------------------------------------------------------------
// TargetMachine Class
//