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| author | Hal Finkel <hfinkel@anl.gov> | 2013-03-27 00:02:20 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2013-03-27 00:02:20 +0000 |
| commit | a7b0630ba84d8c5a6aeb48a19ea153e0e8ae8b54 (patch) | |
| tree | 0ba1d1323a012e73fd220d2f62bb6d359e026eb2 /llvm/lib/Target/PowerPC/PPCCallingConv.td | |
| parent | 6fa6ab0675ddfd359086c2a6347f70f1f08f6a72 (diff) | |
| download | bcm5719-llvm-a7b0630ba84d8c5a6aeb48a19ea153e0e8ae8b54.tar.gz bcm5719-llvm-a7b0630ba84d8c5a6aeb48a19ea153e0e8ae8b54.zip | |
Don't spill PPC VRSAVE on non-Darwin (even in SjLj)
As Bill Schmidt pointed out to me, only on Darwin do we need to spill/restore
VRSAVE in the SjLj code. For non-Darwin, don't spill/restore VRSAVE (and I've
added some asserts to make sure that we're not).
As it turns out, we're not currently handling the Darwin case correctly (I've
added a FIXME in the test case). I've tried adding various implied register
definitions/uses to force the spill without success, so I'll need to address
this later.
llvm-svn: 178096
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCCallingConv.td')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCCallingConv.td | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCCallingConv.td b/llvm/lib/Target/PowerPC/PPCCallingConv.td index 2a680661d36..c8a29a3d2cf 100644 --- a/llvm/lib/Target/PowerPC/PPCCallingConv.td +++ b/llvm/lib/Target/PowerPC/PPCCallingConv.td @@ -137,7 +137,8 @@ def CSR_SVR464 : CalleeSavedRegs<(add X14, X15, X16, X17, X18, X19, X20, VRSAV V20, V21, V22, V23, V24, V25, V26, V27, V28, V29, V30, V31)>; -def CSR_NoRegs : CalleeSavedRegs<(add)>; +def CSR_NoRegs : CalleeSavedRegs<(add VRSAVE)>; +def CSR_NoRegs_Darwin : CalleeSavedRegs<(add)>; def CSR_NoRegs_Altivec : CalleeSavedRegs<(add (sequence "V%u", 0, 31), VRSAVE)>; |
