RFR: 8295979: [IR Framework] Improve IR matching warning [v2]

[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

Emanuel Peter has updated the pull request incrementally with one additional commit since the last revision:

  copyright date

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Changes:
  - all: https://git.openjdk.org/jdk/pull/12589/files
  - new: https://git.openjdk.org/jdk/pull/12589/files/c59291d2..704ed9e4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12589&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12589&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 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