Changes in directory llvm/lib/Target/PowerPC:
PPCInstrInfo.td updated: 1.165 -> 1.166
---
Log message:
Added field noResults to Instruction.
Currently tblgen cannot tell which operands in the operand list are results so
it assumes the first one is a result. This is bad. Ideally we would fix this
by separating results from inputs, e.g. (res R32:$dst),
(ops R32:$src1, R32:$src2). But that's a more distruptive change. Adding
'let noResults = 1' is the workaround to tell tblgen that the instruction does
not produces a result. It works for now since tblgen does not support
instructions which produce multiple results.
---
Diffs of the changes: (+10 -9)
PPCInstrInfo.td | 19 ++++++++++---------
1 files changed, 10 insertions(+), 9 deletions(-)
Index: llvm/lib/Target/PowerPC/PPCInstrInfo.td
diff -u llvm/lib/Target/PowerPC/PPCInstrInfo.td:1.165
llvm/lib/Target/PowerPC/PPCInstrInfo.td:1.166
--- llvm/lib/Target/PowerPC/PPCInstrInfo.td:1.165 Fri Dec 23 16:14:32 2005
+++ llvm/lib/Target/PowerPC/PPCInstrInfo.td Mon Dec 26 03:11:45 2005
@@ -224,17 +224,18 @@
let isTerminator = 1 in {
// FIXME: temporary workaround for return without an incoming flag.
- let isReturn = 1 in
+ let isReturn = 1, noResults = 1 in
def BLRVOID : XLForm_2_ext<19, 16, 20, 0, 0, (ops), "blr", BrB, [(ret)]>;
- let isReturn = 1, hasInFlag = 1 in
+ let isReturn = 1, noResults = 1, hasInFlag = 1 in
def BLR : XLForm_2_ext<19, 16, 20, 0, 0, (ops), "blr", BrB, []>;
+ let noResults = 1 in
def BCTR : XLForm_2_ext<19, 528, 20, 0, 0, (ops), "bctr", BrB, []>;
}
let Defs = [LR] in
def MovePCtoLR : Pseudo<(ops piclabel:$label), "bl $label", []>;
-let isBranch = 1, isTerminator = 1, hasCtrlDep = 1 in {
+let isBranch = 1, isTerminator = 1, hasCtrlDep = 1, noResults = 1 in {
def COND_BRANCH : Pseudo<(ops CRRC:$crS, u16imm:$opc,
target:$true, target:$false),
"; COND_BRANCH", []>;
@@ -262,7 +263,7 @@
"bnu $crS, $block", BrB>;
}
-let isCall = 1,
+let isCall = 1, noResults = 1,
// All calls clobber the non-callee saved registers...
Defs = [R0,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12,
F0,F1,F2,F3,F4,F5,F6,F7,F8,F9,F10,F11,F12,F13,
@@ -328,7 +329,7 @@
def LIS : DForm_2_r0<15, (ops GPRC:$rD, symbolHi:$imm),
"lis $rD, $imm", IntGeneral,
[(set GPRC:$rD, imm16Shifted:$imm)]>;
-let isStore = 1 in {
+let isStore = 1, noResults = 1 in {
def STMW : DForm_3<47, (ops GPRC:$rS, s16imm:$disp, GPRC:$rA),
"stmw $rS, $disp($rA)", LdStLMW,
[]>;
@@ -385,7 +386,7 @@
"lfd $rD, $src", LdStLFD,
[(set F8RC:$rD, (load iaddr:$src))]>;
}
-let isStore = 1 in {
+let isStore = 1, noResults = 1 in {
def STFS : DForm_9<52, (ops F4RC:$rS, memri:$dst),
"stfs $rS, $dst", LdStUX,
[(store F4RC:$rS, iaddr:$dst)]>;
@@ -404,7 +405,7 @@
"ld $rT, $DS($rA)", LdStLD,
[]>, isPPC64;
}
-let isStore = 1 in {
+let isStore = 1, noResults = 1 in {
def STD : DSForm_2<62, 0, (ops GPRC:$rT, s16immX4:$DS, GPRC:$rA),
"std $rT, $DS($rA)", LdStSTD,
[]>, isPPC64;
@@ -511,7 +512,7 @@
def SRAW : XForm_6<31, 792, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
"sraw $rA, $rS, $rB", IntShift,
[(set GPRC:$rA, (PPCsra GPRC:$rS, GPRC:$rB))]>;
-let isStore = 1 in {
+let isStore = 1, noResults = 1 in {
def STBX : XForm_8<31, 215, (ops GPRC:$rS, memrr:$dst),
"stbx $rS, $dst", LdStGeneral,
[(truncstore GPRC:$rS, xaddr:$dst, i8)]>;
@@ -636,7 +637,7 @@
[(set F8RC:$frD, (fneg F8RC:$frB))]>;
-let isStore = 1 in {
+let isStore = 1, noResults = 1 in {
def STFIWX: XForm_28<31, 983, (ops F4RC:$frS, memrr:$dst),
"stfiwx $frS, $dst", LdStUX,
[]>;
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