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these registers don't belong to any register classes, so don't mark them 

as callee save.  They can never be generated by the compiler.

llvm-svn: 23551
This commit is contained in:
Chris Lattner 2005-09-30 06:42:24 +00:00
parent 26f5fb1277
commit 6169a78f46
1 changed files with 21 additions and 11 deletions
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32
llvm/lib/Target/IA64/IA64.td
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@ -38,7 +38,10 @@ def IA64 : Target {
//'preserved' GRs:
[r4, r5, r6, r7,
[
// We never generate references to these regs, so we don't need to declare
// that they are saved. In fact, we could just remove them entirely.
//r4, r5, r6, r7,
//'special' GRs:
@ -67,19 +70,26 @@ def IA64 : Target {
*/
//'preserved' FP regs:
F2,F3,F4,F5,
F16,F17,F18,F19,F20,F21,F22,F23,
F24,F25,F26,F27,F28,F29,F30,F31,
/* We never generate references to these regs, so we don't need to declare
* that they are saved. In fact, we could just remove them entirely.
* F2,F3,F4, F5,
* F16,F17,F18,F19,F20,F21,F22,F23,
* F24,F25,F26,F27,F28,F29,F30,F31,
*/
//'preserved' predicate regs:
p1, p2, p3, p4, p5,
p16, p17, p18, p19, p20, p21, p22, p23,
p24, p25, p26, p27, p28, p29, p30, p31,
p32, p33, p34, p35, p36, p37, p38, p39,
p40, p41, p42, p43, p44, p45, p46, p47,
p48, p49, p50, p51, p52, p53, p54, p55,
p56, p57, p58, p59, p60, p61, p62, p63];
/* We never generate references to these regs, so we don't need to declare
that they are saved. In fact, we could just remove them entirely.
p1, p2, p3, p4, p5,
p16, p17, p18, p19, p20, p21, p22, p23,
p24, p25, p26, p27, p28, p29, p30, p31,
p32, p33, p34, p35, p36, p37, p38, p39,
p40, p41, p42, p43, p44, p45, p46, p47,
p48, p49, p50, p51, p52, p53, p54, p55,
p56, p57, p58, p59, p60, p61, p62, p63
*/
];
// We don't go anywhere near the LP32 variant of IA64 as
// sometimes seen in (for example) HP-UX