[llvm] a57fdcd - x87 FPU state instructions do not use an f32 memory location

[Eric Astor via llvm-commits]

Author: Eric Astor
Date: 2020-09-01T13:50:07-04:00
New Revision: a57fdcdd404bd9fa69463c587ee7915dde8541a2

URL: https://github.com/llvm/llvm-project/commit/a57fdcdd404bd9fa69463c587ee7915dde8541a2
DIFF: https://github.com/llvm/llvm-project/commit/a57fdcdd404bd9fa69463c587ee7915dde8541a2.diff

LOG: x87 FPU state instructions do not use an f32 memory location

These instructions actually use a 512-byte location, where bytes 464-511 are ignored.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D86942

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86InstrFPStack.td

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/X86/X86InstrFPStack.td b/llvm/lib/Target/X86/X86InstrFPStack.td
index 67dcb8d00ea5..961b4e590365 100644
--- a/llvm/lib/Target/X86/X86InstrFPStack.td
+++ b/llvm/lib/Target/X86/X86InstrFPStack.td
@@ -392,13 +392,13 @@ def FICOMP32m: FPI<0xDA, MRM3m, (outs), (ins i32mem:$src), "ficomp{l}\t$src">;
 
 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