RFR: 8295979: [IR Framework] Improve IR matching warning

[Emanuel Peter]

The IR framework already warns that some rule was not applied. But it was not clear which ones were not applied.

I now say which one was not applied (eg `2 of 3`). I improved the wording, it was not always correct. And I also print the constraints, so that one can more quickly understand why it was not applied.

Given the numbers `x of N` one can easily deduce if there are still rules that were applied.

Examples:


[IREncodingPrinter] Disabling IR matching for rule 1 of 3 in testReductionAndLong: None of the flag constraints met (applyIfOr): SuperWordReductions, false, LoopMaxUnroll, <= 4
[IREncodingPrinter] Disabling IR matching for rule 3 of 3 in testReductionAndLong: Not all feature constraints are met (applyIfCPUFeatureAnd): sse4.1, true, avx2, false
[IREncodingPrinter] Disabling IR matching for rule 1 of 3 in testReductionOrLong: None of the flag constraints met (applyIfOr): SuperWordReductions, false, LoopMaxUnroll, <= 4
[IREncodingPrinter] Disabling IR matching for rule 3 of 3 in testReductionOrLong: Not all feature constraints are met (applyIfCPUFeatureAnd): sse4.1, true, avx2, false

[IREncodingPrinter] Disabling IR matching for rule 1 of 3 in testReductionMulLong: None of the flag constraints met (applyIfOr): SuperWordReductions, false, LoopMaxUnroll, <= 4
[IREncodingPrinter] Disabling IR matching for rule 2 of 3 in testReductionMulLong: None of the feature constraints met (applyIfCPUFeatureOr): avx512dq, true, sve, true
[IREncodingPrinter] Disabling IR matching for rule 3 of 3 in testReductionMulLong: Not all feature constraints are met (applyIfCPUFeatureAnd): sse4.1, true, avx2, false

-------------

Commit messages:
 - 8295979: [IR Framework] Improve IR matching warning

Changes: https://git.openjdk.org/jdk/pull/12589/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12589&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8295979
  Stats: 12 lines in 1 file changed: 1 ins; 0 del; 11 mod
  Patch: https://git.openjdk.org/jdk/pull/12589.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12589/head:pull/12589

PR: https://git.openjdk.org/jdk/pull/12589