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ef81a105e5
If we need to spill the result of the PHI instruction, we insert the spill after
all of the PHIs and EHPads, however, in a catchswitch block there is no
room to insert the spill. Make room by splitting away catchswitch into a separate
block.
Before the fix:
catch.dispatch:
%val = phi i32 [ 1, %if.then ], [ 2, %if.else ]
%switch = catchswitch within none [label %catch] unwind label %cleanuppad
After:
catch.dispatch:
%val = phi i32 [ 1, %if.then ], [ 2, %if.else ]
%tok = cleanuppad within none []
; spill goes here
cleanupret from %tok unwind label %catch.dispatch.switch
catch.dispatch.switch:
%switch = catchswitch within none [label %catch] unwind label %cleanuppad
https://reviews.llvm.org/D31846
llvm-svn: 303232
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