Change set of reserved bits

Author: spavloff

llvm/lib/Target/AArch64/AArch64ISelLowering.h

@@ -524,7 +524,7 @@ enum Rounding {
 const unsigned RoundingBitsPos = 22;
 
 // Reserved bits should be preserved when modifying FPCR.
-const uint64_t ReservedFPControlBits = 0xfe0fe0f8;
+const uint64_t ReservedFPControlBits = 0xfffffffff80040f8;
 
 // Registers used to pass function arguments.
 ArrayRef<MCPhysReg> getGPRArgRegs();

llvm/test/CodeGen/AArch64/fpmode.ll

@@ -49,9 +49,9 @@ entry:
 define void @func_reset_fpmode() #0 {
 ; DAG-LABEL: func_reset_fpmode:
 ; DAG:       // %bb.0: // %entry
-; DAG-NEXT:    mov w9, #57592 // =0xe0f8
+; DAG-NEXT:    mov x9, #-48904 // =0xffffffffffff40f8
 ; DAG-NEXT:    mrs x8, FPCR
-; DAG-NEXT:    movk w9, #65039, lsl #16
+; DAG-NEXT:    movk x9, #63488, lsl #16
 ; DAG-NEXT:    and x8, x8, x9
 ; DAG-NEXT:    msr FPCR, x8
 ; DAG-NEXT:    ret