forked from OSchip/llvm-project
8f623f4ab0
Without SVE, after a dynamic stack allocation has modified the SP, it is presumed that a frame pointer restoration will revert the SP back to it's correct value prior to any caller stack being restored. However the SVE frame is restored using the stack pointer directly, as it is located after the frame pointer. This means that in the presence of a dynamic stack allocation, any SVE callee state gets corrupted as SP has the incorrect value when the SVE state is restored. To address this issue, when variable sized objects and SVE CSRs are present, treat the stack as having been realigned, hence restoring the stack pointer from the frame pointerr prior to restoring the SVE state. Differential Revision: https://reviews.llvm.org/D124615 |
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| AArch64 | ||
| AMDGPU | ||
| ARC | ||
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| AVR | ||
| BPF | ||
| CSKY | ||
| DirectX | ||
| Generic | ||
| Hexagon | ||
| Inputs | ||
| Lanai | ||
| LoongArch | ||
| M68k | ||
| MIR | ||
| MLRegalloc | ||
| MSP430 | ||
| Mips | ||
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| RISCV | ||
| SPARC | ||
| SPIRV | ||
| SystemZ | ||
| Thumb | ||
| Thumb2 | ||
| VE | ||
| WebAssembly | ||
| WinCFGuard | ||
| WinEH | ||
| X86 | ||
| XCore | ||