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compiler: make escape analysis more strict about runtime calls

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Following the previous CL, in the escape analysis list all the
expected runtime calls, and fail if an unexpected one is seen.

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/340397
This commit is contained in:
Cherry Mui 2021-08-06 11:03:47 -04:00 committed by Ian Lance Taylor
parent aff75af3b5
commit 629b5699fb
2 changed files with 47 additions and 2 deletions
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2
gcc/go/gofrontend/MERGE
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@ -1,4 +1,4 @@
32590102c464679f845667b5554e1dcce2549ad2
747f3a2d78c073e9b03dd81914d0edb7ddc5be14
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.

47
gcc/go/gofrontend/escape.cc
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@ -1646,6 +1646,7 @@ Escape_analysis_assign::expression(Expression** pexpr)
case Runtime::MAKECHAN:
case Runtime::MAKECHAN64:
case Runtime::MAKEMAP:
case Runtime::MAKEMAP64:
case Runtime::MAKESLICE:
case Runtime::MAKESLICE64:
this->context_->track(n);
@ -1705,8 +1706,52 @@ Escape_analysis_assign::expression(Expression** pexpr)
}
break;
default:
case Runtime::MEMCMP:
case Runtime::DECODERUNE:
case Runtime::INTSTRING:
case Runtime::MAKEMAP_SMALL:
case Runtime::MAPACCESS1:
case Runtime::MAPACCESS1_FAST32:
case Runtime::MAPACCESS1_FAST64:
case Runtime::MAPACCESS1_FASTSTR:
case Runtime::MAPACCESS1_FAT:
case Runtime::MAPACCESS2:
case Runtime::MAPACCESS2_FAST32:
case Runtime::MAPACCESS2_FAST64:
case Runtime::MAPACCESS2_FASTSTR:
case Runtime::MAPACCESS2_FAT:
case Runtime::MAPASSIGN_FAST32:
case Runtime::MAPASSIGN_FAST64:
case Runtime::MAPITERINIT:
case Runtime::MAPITERNEXT:
case Runtime::MAPCLEAR:
case Runtime::CHANRECV2:
case Runtime::SELECTGO:
case Runtime::SELECTNBSEND:
case Runtime::SELECTNBRECV:
case Runtime::BLOCK:
case Runtime::IFACET2IP:
case Runtime::EQTYPE:
case Runtime::MEMCLRHASPTR:
case Runtime::FIELDTRACK:
case Runtime::BUILTIN_MEMSET:
case Runtime::PANIC_SLICE_CONVERT:
// these do not escape.
break;
case Runtime::IFACEE2E2:
case Runtime::IFACEI2E2:
case Runtime::IFACEE2I2:
case Runtime::IFACEI2I2:
case Runtime::IFACEE2T2P:
case Runtime::IFACEI2T2P:
// handled in ::assign.
break;
default:
// should not see other runtime calls. they are not yet
// lowered to runtime calls at this point.
go_unreachable();
}
}
else