[llvm-commits] CVS: llvm/lib/Target/Alpha/AlphaInstrInfo.td

[Evan Cheng]

Changes in directory llvm/lib/Target/Alpha:

AlphaInstrInfo.td updated: 1.90 -> 1.91
---
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:  (+5 -5)

 AlphaInstrInfo.td |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)


Index: llvm/lib/Target/Alpha/AlphaInstrInfo.td
diff -u llvm/lib/Target/Alpha/AlphaInstrInfo.td:1.90 llvm/lib/Target/Alpha/AlphaInstrInfo.td:1.91
--- llvm/lib/Target/Alpha/AlphaInstrInfo.td:1.90	Sun Dec 25 11:36:48 2005
+++ llvm/lib/Target/Alpha/AlphaInstrInfo.td	Mon Dec 26 03:11:44 2005
@@ -404,14 +404,14 @@
 def : Pat<(setune GPRC:$X, immUExt8:$Y), (CMPEQi (CMPEQ GPRC:$X, immUExt8:$Y), 0)>;
 
 
-let isReturn = 1, isTerminator = 1 in 
+let isReturn = 1, isTerminator = 1, noResults = 1 in 
   def RET : MbrForm< 0x1A, 0x02, (ops GPRC:$RD, GPRC:$RS, s64imm:$DISP), "ret $RD,($RS),$DISP">; //Return from subroutine
 //DAG Version:
-let isReturn = 1, isTerminator = 1, Ra = 31, Rb = 26, disp = 1, Uses = [R26] in 
+let isReturn = 1, isTerminator = 1, noResults = 1, Ra = 31, Rb = 26, disp = 1, Uses = [R26] in 
   def RETDAG : MbrForm< 0x1A, 0x02, (ops), "ret $$31,($$26),1">; //Return from subroutine
 
 def JMP : MbrForm< 0x1A, 0x00, (ops GPRC:$RD, GPRC:$RS, GPRC:$DISP), "jmp $RD,($RS),$DISP">; //Jump
-let isCall = 1, Ra = 26,
+let isCall = 1, noResults = 1, Ra = 26,
     Defs = [R0, R1, R2, R3, R4, R5, R6, R7, R8, R16, R17, R18, R19,
             R20, R21, R22, R23, R24, R25, R26, R27, R28, R29,
             F0, F1,
@@ -419,7 +419,7 @@
             F20, F21, F22, F23, F24, F25, F26, F27, F28, F29, F30], Uses = [R29] in {
     def BSR : BFormD<0x34, "bsr $$26,$$$DISP..ng", []>; //Branch to subroutine
 }
-let isCall = 1,
+let isCall = 1, noResults = 1,
     Defs = [R0, R1, R2, R3, R4, R5, R6, R7, R8, R16, R17, R18, R19,
             R20, R21, R22, R23, R24, R25, R26, R27, R28, R29,
             F0, F1,
@@ -428,7 +428,7 @@
     def JSR : MbrForm< 0x1A, 0x01, (ops ), "jsr $$26,($$27),0">; //Jump to subroutine
 }
 
-let isCall = 1, Defs = [R23, R24, R25, R27, R28], Uses = [R24, R25, R27] in
+let isCall = 1, noResults = 1, Defs = [R23, R24, R25, R27, R28], Uses = [R24, R25, R27] in
   def JSRs : MbrForm< 0x1A, 0x01, (ops ), "jsr $$23,($$27),0">; //Jump to div or rem