Rebase FP16 tests.

Rebase new pre-commit tests.

Rebase pre-commit test.

Address comments. THX for review!

Address comments. THX for review!

This patch is to fix regression below: https://gcc.godbolt.org/z/v3nnbKP1j

ping...

ping...

Address comments. Thanks for review!

Address comments.

Address comments.

Address comments.

Address comments.

Add release note.

In D140281#4004707, @lebedev.ri wrote:

This patch says what it does, but not why it does what it does.

THX for review. I'll land!

Rebase and add release note.

Several updates:

1. Use literal suffix "q" instead of "L" for "__float128" and removed related FIXME.
2. Fixed one unsigned test.
3. Add Fixme for some wrong behavior under O2 due to FE optimizations.

In D139170#3965852, @mgehre-amd wrote:

In D139170#3965850, @FreddyYe wrote:

In D139170#3965814, @mgehre-amd wrote:

Do other targets not support > 128 bit integers, or is this PR only the first conservative step of lifting the limit?

I temporary only enabled > 128 bit FP conversion for X86 in https://reviews.llvm.org/D137241, since I highly relied on end-to-end tests to implement that pass and I don't have other targets' environment to verify. So same to this patch, I only lift the limit for X86. Hope other targets will follow us to enable for themselves. WDYT?

A right, I was confused because I saw llvm/test/CodeGen/AArch64/O0-pipeline.ll running the new pass on AArch64, but actually it doesn't do anything unless it's enabled in llvm/lib/Target/*/*ISelLowering.cpp. Got it, thanks!

In D139170#3965814, @mgehre-amd wrote:

Do other targets not support > 128 bit integers, or is this PR only the first conservative step of lifting the limit?

In D137241#3963462, @aaron.ballman wrote:

In D137241#3963326, @FreddyYe wrote:

In D137241#3962787, @mgehre-amd wrote:

I think this was the last reason for restricting _BitInt to <= 128 by default in clang. Are you planning to create a PR to lift that restriction now?

Yes, I agree. The patch of tests also relies on lifting first. But I'm not sure if https://github.com/llvm/llvm-project/blob/450de8008bb0ccb5dfc9dd69b6f5b434158772bd/clang/include/clang/Basic/TargetInfo.h#L637 is the only place needs to change. @aaron.ballman WDYT?

Do *all* targets support > 128 now, or just x86 targets? If all targets support > 128, then that's the place to update (and we can consider starting to rip some of the target-specific machinery and command line option out). But if it's just x86, then we should override this function in the correct derived TargetInfo class.

In D137241#3962787, @mgehre-amd wrote:

I think this was the last reason for restricting _BitInt to <= 128 by default in clang. Are you planning to create a PR to lift that restriction now?

Failed Tests (1):

LLVM :: CodeGen/AArch64/sve-streaming-mode-fixed-length-ld2-alloca.ll

Testing Time: 345.12s

Skipped          :    38
Unsupported      :  1357
Passed           : 88906
Expectedly Failed:   195
Failed           :     1

Address comments. THX for review!

Address comments. THX for review!

minor fix.

Address comments. THX for review!

Support unsigned expandIToFP() and add IR comments as refer.

Some updates

rebase

Complete the imple and split tests into another Phab.

WIP update.

Address comments. THX fore review!

Address comments. THX for review!

Added ZHAOXIN_FAM7H.

gcc has landed related patch: Sierraforest, Graniterapids and Grandrdige. We can follow their CPU list order now.

Rebase and add missing supports in cpu_model.c

Address comments.