// 64-bit CR instructions
+let neverHasSideEffects = 1 in {
def MTCRF8 : XFXForm_5<31, 144, (outs crbitm:$FXM), (ins G8RC:$rS),
"mtcrf $FXM, $rS", BrMCRX>,
PPC970_MicroCode, PPC970_Unit_CRU;
def MFCR8pseud: XFXForm_3<31, 19, (outs G8RC:$rT), (ins crbitm:$FXM),
"#MFCR8pseud", SprMFCR>,
PPC970_MicroCode, PPC970_Unit_CRU;
-
+} // neverHasSideEffects = 1
+
+// MFCR uses all CR registers, but marking that explicitly causes
+// problems because some of them appear to be undefined. Because
+// this form is used only in prologue code, just mark it as having
+// side effects.
+let /* Uses = [CR0, CR1, CR2, CR3, CR4, CR5, CR6] */ hasSideEffects = 1 in
def MFCR8 : XFXForm_3<31, 19, (outs G8RC:$rT), (ins),
"mfcr $rT", SprMFCR>,
PPC970_MicroCode, PPC970_Unit_CRU;
def RESTORE_VRSAVE : Pseudo<(outs VRSAVERC:$vrsave), (ins memri:$F),
"#RESTORE_VRSAVE", []>;
+let neverHasSideEffects = 1 in {
def MTCRF : XFXForm_5<31, 144, (outs crbitm:$FXM), (ins GPRC:$rS),
"mtcrf $FXM, $rS", BrMCRX>,
PPC970_MicroCode, PPC970_Unit_CRU;
def MFCRpseud: XFXForm_3<31, 19, (outs GPRC:$rT), (ins crbitm:$FXM),
"#MFCRpseud", SprMFCR>,
PPC970_MicroCode, PPC970_Unit_CRU;
-
-def MFCR : XFXForm_3<31, 19, (outs GPRC:$rT), (ins),
- "mfcr $rT", SprMFCR>,
- PPC970_MicroCode, PPC970_Unit_CRU;
def MFOCRF: XFXForm_5a<31, 19, (outs GPRC:$rT), (ins crbitm:$FXM),
"mfocrf $rT, $FXM", SprMFCR>,
PPC970_DGroup_First, PPC970_Unit_CRU;
+} // neverHasSideEffects = 1
+
+// MFCR uses all CR registers, but marking that explicitly causes
+// problems because some of them appear to be undefined. Because
+// this form is used only in prologue code, just mark it as having
+// side effects.
+let /* Uses = [CR0, CR1, CR2, CR3, CR4, CR5, CR6] */ hasSideEffects = 1 in
+def MFCR : XFXForm_3<31, 19, (outs GPRC:$rT), (ins),
+ "mfcr $rT", SprMFCR>,
+ PPC970_MicroCode, PPC970_Unit_CRU;
// Pseudo instruction to perform FADD in round-to-zero mode.
let usesCustomInserter = 1, Uses = [RM] in {