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Revert "X86: Align the stack on word boundaries in LowerFormalArguments()"
This (mostly) reverts commit r216119. Somewhere during the review Reid committed r214980 which fixed this another way, and I neglected to check that the testcase still failed before committing. I've left test/CodeGen/X86/aligned-variadic.ll around in case it adds extra coverage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216246 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -371,16 +371,11 @@ public:
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return Reg;
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}
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/// AlignStack - Align the top of the stakc to the specified alignment.
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void AlignStack(unsigned Align) {
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assert(Align && ((Align - 1) & Align) == 0); // Align is power of 2.
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StackOffset = ((StackOffset + Align - 1) & ~(Align - 1));
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}
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/// AllocateStack - Allocate a chunk of stack space with the specified size
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/// and alignment.
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unsigned AllocateStack(unsigned Size, unsigned Align) {
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AlignStack(Align);
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assert(Align && ((Align - 1) & Align) == 0); // Align is power of 2.
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StackOffset = ((StackOffset + Align - 1) & ~(Align - 1));
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unsigned Result = StackOffset;
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StackOffset += Size;
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MF.getFrameInfo()->ensureMaxAlignment(Align);
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@ -2298,7 +2298,6 @@ X86TargetLowering::LowerFormalArguments(SDValue Chain,
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CCInfo.AllocateStack(32, 8);
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CCInfo.AnalyzeFormalArguments(Ins, CC_X86);
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CCInfo.AlignStack(Is64Bit ? 8 : 4);
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unsigned LastVal = ~0U;
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SDValue ArgValue;
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