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| author | Torok Edwin <edwintorok@gmail.com> | 2009-05-23 17:29:48 +0000 |
|---|---|---|
| committer | Torok Edwin <edwintorok@gmail.com> | 2009-05-23 17:29:48 +0000 |
| commit | be6a9a151adb3e9b47f45a10d31f451fd461720f (patch) | |
| tree | 82bb0b35d97239e3076ef46056d41889d04b63c4 /llvm/lib/Target/ARM/ARMSubtarget.cpp | |
| parent | ba74e5daa58fd7d65e5ff2929b7712e83299c097 (diff) | |
| download | bcm5719-llvm-be6a9a151adb3e9b47f45a10d31f451fd461720f.tar.gz bcm5719-llvm-be6a9a151adb3e9b47f45a10d31f451fd461720f.zip | |
Fix PR4254.
The DAGCombiner created a negative shiftamount, stored in an
unsigned variable. Later the optimizer eliminated the shift entirely as being
undefined.
Example: (srl (shl X, 56) 48). ShiftAmt is 4294967288.
Fix it by checking that the shiftamount is positive, and storing in a signed
variable.
llvm-svn: 72331
Diffstat (limited to 'llvm/lib/Target/ARM/ARMSubtarget.cpp')
0 files changed, 0 insertions, 0 deletions
