435ee4856c
Tested with a bunch of consumers on amd64, and lightly tested on sparc64 (me) and powerpc (cwen@).
36 lines
1.6 KiB
Plaintext
36 lines
1.6 KiB
Plaintext
$OpenBSD: patch-lib_Target_X86_X86Subtarget_h,v 1.9 2021/05/13 23:54:25 jca Exp $
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- 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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@@ -459,6 +459,9 @@ class X86Subtarget final : public X86GenSubtargetInfo
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/// entry to the function and which must be maintained by every function.
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Align stackAlignment = 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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@@ -549,6 +552,8 @@ class X86Subtarget final : public X86GenSubtargetInfo
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return &getInstrInfo()->getRegisterInfo();
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}
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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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@@ -809,6 +814,7 @@ 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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