diff options
| -rw-r--r-- | lib/Target/IA64/IA64RegisterInfo.td | 21 | ||||
| -rw-r--r-- | lib/Target/IA64/README | 2 |
2 files changed, 18 insertions, 5 deletions
diff --git a/lib/Target/IA64/IA64RegisterInfo.td b/lib/Target/IA64/IA64RegisterInfo.td index be2adb347d..9d33dc3055 100644 --- a/lib/Target/IA64/IA64RegisterInfo.td +++ b/lib/Target/IA64/IA64RegisterInfo.td @@ -234,7 +234,13 @@ def B6 : GR<0, "b6">; // in IA64RegisterInfo.cpp def GR : RegisterClass<i64, 64, - [r3, r8, r9, r10, r11, r14, + [ + +//FIXME!: for readability, we don't want the out registers to be the first +// ones allocated + + out7, out6, out5, out4, out3, out2, out1, out0, + r3, r8, r9, r10, r11, r14, r16, r17, r18, r19, r20, r21, r23, r24, r25, r26, r27, r28, r29, r30, r31, r32, r33, r34, r35, r36, r37, r38, r39, @@ -249,13 +255,18 @@ def GR : RegisterClass<i64, 64, r104, r105, r106, r107, r108, r109, r110, r111, r112, r113, r114, r115, r116, r117, r118, r119, r120, r121, r122, r123, r124, r125, r126, r127, - out0, out1, out2, out3, - out4, out5, out6, out7, - r0, r1, r2, r12, r13, r15, r22]> // these last 7 are special (look down) + r0, r1, r2, r12, r13, r15, r22]> // the last 15 are special (look down) { let Methods = [{ + + iterator allocation_order_begin(MachineFunction &MF) const { + // hide registers appropriately: + return begin()+(8-(MF.getInfo<IA64FunctionInfo>()->outRegsUsed)); + } + iterator allocation_order_end(MachineFunction &MF) const { - int numReservedRegs=7; // the 15 special registers r0,r1,r2,r12,r13 etc + int numReservedRegs=7; // the 7 special registers r0,r1,r2,r12,r13 etc + // we also can't allocate registers for use as locals if they're // already required as 'out' registers numReservedRegs+=MF.getInfo<IA64FunctionInfo>()->outRegsUsed; diff --git a/lib/Target/IA64/README b/lib/Target/IA64/README index ec94299e28..d1a8fd2fa0 100644 --- a/lib/Target/IA64/README +++ b/lib/Target/IA64/README @@ -55,6 +55,8 @@ I guarantee it. TODO: - clean up and thoroughly test the isel patterns. + - fix stacked register allocation order: (for readability) we don't want + the out? registers being the first ones used - fix up floating point (nb http://gcc.gnu.org/wiki?pagename=ia64%20floating%20point ) - bundling! |