[PATCH] D113335: [X86] Preserve FPSW when popping x87 stack
Craig Topper via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Sun Nov 7 16:57:22 PST 2021
craig.topper added inline comments.
================
Comment at: llvm/lib/Target/X86/X86FloatingPoint.cpp:874
} else { // Insert an explicit pop
+ // If this instruction sets FPSW, which is read in following instruction,
+ // insert pop after that reader.
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Is checking the next instruction sufficient? Can other instructions be scheduled before the FNSTSW?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D113335/new/
https://reviews.llvm.org/D113335
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