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This patch adds a new HIR instruction to Optimizing. HSelect returns
one of two inputs based on the outcome of a condition.
This is only initial implementation which:
- defines the new instruction,
- repurposes BooleanSimplifier to emit it,
- extends InstructionSimplifier to statically resolve it,
- updates existing code and tests accordingly.
Code generators currently emit fallback if/then/else code and will be
updated in follow-up CLs to use platform-specific conditional moves
when possible.
Change-Id: Ib61b17146487ebe6b55350c2b589f0b971dcaaee
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Perform a copyright headers clean up mostly.
Change-Id: I26c855b2f54d0887676d9b9b8281b14b7978ab29
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In order to prevent tests passing due to lines with hard-to-spot
formatting errors begin ignored, e.g. by forgetting the colon after
"//CHECK", Checker will now require its assertions to start with "///"
or "##", respectivelly for Java and Smali. Such lines will never be
ignored and will fail the test unless successfully parsed.
Change-Id: I0da9a8f13eb96d950af8c85df17d1899a853a299
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Checker interprets whitespace as a don't-care placeholder, making it
easier to write assertions which test only parts of the output (e.g.
"//CHECK: Add liveness:44" does not test the inputs or any other
attributes apart from "liveness").
However, since the GraphVisualizer prints lists with elements
separated by spaces ("[ v1 ... vN ]"), this allows for false positives
caused by an occurrence elsewhere in the output. For example, the
assertion: "//CHECK: [ x y ]" will match "[ x y ]" but also
"[ x a y b ]" or even "[ x ] abc [ y ]".
Switching to comma-separated lists works around this issue.
This patch updates all test files, fixes one false positive that this
change revealed (test 442, line 337) and two occurrences of a wrong
match (test 462, lines 121, 149).
Bug: 21189305
Change-Id: I3b22503be3d92529dac0b13f66bccbcfabea6721
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This patch changes the syntax for defining and referencing variables
from square brackets '[[VAR]]' to angle brackets '<<VAR>>'. This is
done in order to avoid clashes when matching against lists enclosed
in square brackets.
Change-Id: Ib9560b07bdc7bd641fd1eb6143c0063e0783f1eb
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Inlined methods are currently not simplified.
Change-Id: I075130c9df55e2f55032a2c81b08d42cb2cc01f6
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Previous change allowed integer Phis as inputs of instructions
expecting a boolean type. This list, however, was not exhaustive as
binary operations And, Or and Xor are also valid inputs. This patch
extends the list in SSAChecker.
Change-Id: I5b5c9e7a17992cc4987e3a078ee23ea80028ecfc
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Since bool and int are interchangeable types, checking whether an
input is kPrimBoolean can fail when replaced with 0/1 constant or
a phi. This patch removes the problematic DCHECKs, adds a best-effort
verification into SSAChecker but leaves the phi case empty until a
suitable analysis is implemented.
Change-Id: I31e8daf27dd33d2fd74049b82bed1cb7c240c8c6
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