[PATCH] D86942: x87 FPU state instructions do not use an f32 memory location
Eric Astor via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Sep 1 07:59:24 PDT 2020
epastor created this revision.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.
epastor requested review of this revision.
These instructions actually use a 512-byte location, where bytes 464-511 are ignored.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D86942
Files:
llvm/lib/Target/X86/X86InstrFPStack.td
Index: llvm/lib/Target/X86/X86InstrFPStack.td
===================================================================
--- llvm/lib/Target/X86/X86InstrFPStack.td
+++ llvm/lib/Target/X86/X86InstrFPStack.td
@@ -392,13 +392,13 @@
let SchedRW = [WriteMicrocoded] in {
let Defs = [FPSW, FPCW], mayLoad = 1 in {
-def FLDENVm : FPI<0xD9, MRM4m, (outs), (ins f32mem:$src), "fldenv\t$src">;
-def FRSTORm : FPI<0xDD, MRM4m, (outs), (ins f32mem:$dst), "frstor\t$dst">;
+def FLDENVm : FPI<0xD9, MRM4m, (outs), (ins anymem:$src), "fldenv\t$src">;
+def FRSTORm : FPI<0xDD, MRM4m, (outs), (ins anymem:$src), "frstor\t$src">;
}
let Defs = [FPSW, FPCW], Uses = [FPSW, FPCW], mayStore = 1 in {
-def FSTENVm : FPI<0xD9, MRM6m, (outs), (ins f32mem:$dst), "fnstenv\t$dst">;
-def FSAVEm : FPI<0xDD, MRM6m, (outs), (ins f32mem:$dst), "fnsave\t$dst">;
+def FSTENVm : FPI<0xD9, MRM6m, (outs), (ins anymem:$dst), "fnstenv\t$dst">;
+def FSAVEm : FPI<0xDD, MRM6m, (outs), (ins anymem:$dst), "fnsave\t$dst">;
}
let Uses = [FPSW], mayStore = 1 in
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