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Remove target attribute break-sse-dep. Instead, do not fold load into sse partial update instructions unless optimizing for size.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91910 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-12-22 17:47:23 +00:00
parent 3dac3b7d23
commit b1f4981333
7 changed files with 25 additions and 56 deletions
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9
lib/Target/X86/X86Subtarget.h
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@@ -78,14 +78,6 @@ protected:
/// IsBTMemSlow - True if BT (bit test) of memory instructions are slow.
bool IsBTMemSlow;
/// BreakSSEDep - True if codegen should unfold load or insert xorps / pxor
/// to break register dependency for a partial register update SSE
/// instruction. This is needed for instructions such as CVTSS2SD which
/// only update the lower part of the register, and the result of the updated
/// part does not depend on the contents of the destination before the
/// instruction, and the non-updated portion of the register is not used.
bool BreakSSEDep;
/// DarwinVers - Nonzero if this is a darwin platform: the numeric
/// version of the platform, e.g. 8 = 10.4 (Tiger), 9 = 10.5 (Leopard), etc.
unsigned char DarwinVers; // Is any darwin-x86 platform.
@@ -150,7 +142,6 @@ public:
bool hasFMA3() const { return HasFMA3; }
bool hasFMA4() const { return HasFMA4; }
bool isBTMemSlow() const { return IsBTMemSlow; }
bool shouldBreakSSEDep() const { return BreakSSEDep; }
bool isTargetDarwin() const { return TargetType == isDarwin; }
bool isTargetELF() const { return TargetType == isELF; }