34 lines
1.5 KiB
Plaintext
34 lines
1.5 KiB
Plaintext
- implement -msave-args in clang/llvm, like the sun did for gcc
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- Turn on -mretpoline by default in clang on amd64.
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Index: lib/Target/X86/X86Subtarget.h
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--- lib/Target/X86/X86Subtarget.h.orig
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+++ lib/Target/X86/X86Subtarget.h
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@@ -481,6 +481,9 @@ class X86Subtarget final : public X86GenSubtargetInfo
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Align TileConfigAlignment = Align(4);
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+ /// Whether function prologues should save register arguments on the stack.
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+ bool SaveArgs = false;
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+
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/// Max. memset / memcpy size that is turned into rep/movs, rep/stos ops.
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///
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// FIXME: this is a known good value for Yonah. How about others?
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@@ -567,6 +570,8 @@ class X86Subtarget final : public X86GenSubtargetInfo
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unsigned getTileConfigSize() const { return 64; }
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Align getTileConfigAlignment() const { return TileConfigAlignment; }
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+ bool getSaveArgs() const { return SaveArgs; }
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+
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/// Returns the minimum alignment known to hold of the
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/// stack frame on entry to the function and which must be maintained by every
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/// function for this subtarget.
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@@ -832,6 +837,7 @@ class X86Subtarget final : public X86GenSubtargetInfo
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bool isTargetDarwin() const { return TargetTriple.isOSDarwin(); }
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bool isTargetFreeBSD() const { return TargetTriple.isOSFreeBSD(); }
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+ bool isTargetOpenBSD() const { return TargetTriple.isOSOpenBSD(); }
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bool isTargetDragonFly() const { return TargetTriple.isOSDragonFly(); }
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bool isTargetSolaris() const { return TargetTriple.isOSSolaris(); }
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bool isTargetPS4() const { return TargetTriple.isPS4CPU(); }
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