[clang-tools-extra] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-10-09 Thread Christian Kissig via cfe-commits
@@ -3764,14 +3768,11 @@ KnownBits SelectionDAG::computeKnownBits(SDValue Op, const APInt &DemandedElts, if (Opcode == ISD::ADDE) // Can't track carry from glue, set carry to unknown. Carry.resetAll(); -else if (Opcode == ISD::UADDO_CARRY || Opcode == ISD::S

[clang-tools-extra] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-10-09 Thread Christian Kissig via cfe-commits
@@ -3764,14 +3768,11 @@ KnownBits SelectionDAG::computeKnownBits(SDValue Op, const APInt &DemandedElts, if (Opcode == ISD::ADDE) // Can't track carry from glue, set carry to unknown. Carry.resetAll(); -else if (Opcode == ISD::UADDO_CARRY || Opcode == ISD::S

[clang] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-10-09 Thread Christian Kissig via cfe-commits
https://github.com/christiankissig updated https://github.com/llvm/llvm-project/pull/67788 >From 5d86936c3a48c613460983c980271fcab8128b75 Mon Sep 17 00:00:00 2001 From: Christian Kissig Date: Tue, 26 Sep 2023 12:18:59 + Subject: [PATCH 1/6] [Support] Add KnownBits::computeForSubBorrow * Im

[clang-tools-extra] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-10-09 Thread Christian Kissig via cfe-commits
https://github.com/christiankissig updated https://github.com/llvm/llvm-project/pull/67788 >From 5d86936c3a48c613460983c980271fcab8128b75 Mon Sep 17 00:00:00 2001 From: Christian Kissig Date: Tue, 26 Sep 2023 12:18:59 + Subject: [PATCH 1/6] [Support] Add KnownBits::computeForSubBorrow * Im

[clang] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-10-09 Thread Christian Kissig via cfe-commits
https://github.com/christiankissig updated https://github.com/llvm/llvm-project/pull/67788 >From 5d86936c3a48c613460983c980271fcab8128b75 Mon Sep 17 00:00:00 2001 From: Christian Kissig Date: Tue, 26 Sep 2023 12:18:59 + Subject: [PATCH 1/5] [Support] Add KnownBits::computeForSubBorrow * Im

[clang-tools-extra] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-10-09 Thread Christian Kissig via cfe-commits
https://github.com/christiankissig updated https://github.com/llvm/llvm-project/pull/67788 >From 5d86936c3a48c613460983c980271fcab8128b75 Mon Sep 17 00:00:00 2001 From: Christian Kissig Date: Tue, 26 Sep 2023 12:18:59 + Subject: [PATCH 1/5] [Support] Add KnownBits::computeForSubBorrow * Im

[clang-tools-extra] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-10-05 Thread Christian Kissig via cfe-commits
https://github.com/christiankissig updated https://github.com/llvm/llvm-project/pull/67788 >From 5d86936c3a48c613460983c980271fcab8128b75 Mon Sep 17 00:00:00 2001 From: Christian Kissig Date: Tue, 26 Sep 2023 12:18:59 + Subject: [PATCH 1/5] [Support] Add KnownBits::computeForSubBorrow * Im

[clang-tools-extra] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-10-01 Thread Christian Kissig via cfe-commits
https://github.com/christiankissig updated https://github.com/llvm/llvm-project/pull/67788 >From 5d86936c3a48c613460983c980271fcab8128b75 Mon Sep 17 00:00:00 2001 From: Christian Kissig Date: Tue, 26 Sep 2023 12:18:59 + Subject: [PATCH 1/5] [Support] Add KnownBits::computeForSubBorrow * Im

[clang] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-09-30 Thread Christian Kissig via cfe-commits
https://github.com/christiankissig updated https://github.com/llvm/llvm-project/pull/67788 >From 5d86936c3a48c613460983c980271fcab8128b75 Mon Sep 17 00:00:00 2001 From: Christian Kissig Date: Tue, 26 Sep 2023 12:18:59 + Subject: [PATCH 1/5] [Support] Add KnownBits::computeForSubBorrow * Im

[libunwind] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-09-30 Thread Christian Kissig via cfe-commits
https://github.com/christiankissig updated https://github.com/llvm/llvm-project/pull/67788 >From 5d86936c3a48c613460983c980271fcab8128b75 Mon Sep 17 00:00:00 2001 From: Christian Kissig Date: Tue, 26 Sep 2023 12:18:59 + Subject: [PATCH 1/5] [Support] Add KnownBits::computeForSubBorrow * Im

[clang-tools-extra] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-09-29 Thread Christian Kissig via cfe-commits
christiankissig wrote: > Might be nice to add a test where this actually shows up in CodeGen. +1 Will look to add it with this change. https://github.com/llvm/llvm-project/pull/67788 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://list

[clang] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-09-29 Thread Christian Kissig via cfe-commits
christiankissig wrote: > Might be nice to add a test where this actually shows up in CodeGen. +1 Will look to add it with this change. https://github.com/llvm/llvm-project/pull/67788 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://list

[clang] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-09-29 Thread Christian Kissig via cfe-commits
@@ -3732,14 +3732,18 @@ KnownBits SelectionDAG::computeKnownBits(SDValue Op, const APInt &DemandedElts, assert(Op.getResNo() == 0 && "We only compute knownbits for the difference here."); -// TODO: Compute influence of the carry operand. -if (Opcode ==

[clang-tools-extra] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-09-29 Thread Christian Kissig via cfe-commits
@@ -3732,14 +3732,18 @@ KnownBits SelectionDAG::computeKnownBits(SDValue Op, const APInt &DemandedElts, assert(Op.getResNo() == 0 && "We only compute knownbits for the difference here."); -// TODO: Compute influence of the carry operand. -if (Opcode ==

[clang-tools-extra] [Support] Add KnownBits::computeForSubBorrow (PR #67788)

2023-09-29 Thread Christian Kissig via cfe-commits
https://github.com/christiankissig created https://github.com/llvm/llvm-project/pull/67788 - [Support] Add KnownBits::computeForSubBorrow - [CodeGen] Implement USUBC, USUBO_CARRY, and SSUBO_CARRY with KnownBits::computeForSubBorrow - [CodeGen] Compute unknown bits for Carry/Borrow for ADD/SUB -