[clang] [ARM][clang] Fix warning for VFP function calls from interrupts. (PR #91870)

chrisnc wrote: Rebased and fixed conflict in release notes. https://github.com/llvm/llvm-project/pull/91870 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[clang] [ARM][clang] Fix warning for VFP function calls from interrupts. (PR #91870)

https://github.com/chrisnc updated https://github.com/llvm/llvm-project/pull/91870 >From b9aae83e94aab9ebed9b3dc3fe23bee4bd3c0756 Mon Sep 17 00:00:00 2001 From: Chris Copeland Date: Sat, 11 May 2024 00:15:50 -0700 Subject: [PATCH] [ARM][clang] Fix warning for VFP function calls from

[clang] [ARM][clang] Fix warning for VFP function calls from interrupts. (PR #91870)

chrisnc wrote: ping @ostannard @smithp35 https://github.com/llvm/llvm-project/pull/91870 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[clang] [ARM][clang] Fix warning for VFP function calls from interrupts. (PR #91870)

chrisnc wrote: I'd like to also address #47815, but I wasn't able to find the right path to answer "is this M-profile" from `TargetInfo`. Would appreciate any suggestions on that. I think it may require `dynamic_cast`-ing the `TargetInfo` to an `ARMTargetInfo`, and then change one of the

[clang] [ARM][clang] Fix warning for VFP function calls from interrupts. (PR #91870)

https://github.com/chrisnc edited https://github.com/llvm/llvm-project/pull/91870 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[clang] [ARM][clang] Fix warning for VFP function calls from interrupts. (PR #91870)

https://github.com/chrisnc updated https://github.com/llvm/llvm-project/pull/91870 >From b72b63c51b1859e1a7e792eda20549ef93c8d6c0 Mon Sep 17 00:00:00 2001 From: Chris Copeland Date: Sat, 11 May 2024 00:15:50 -0700 Subject: [PATCH] [ARM][clang] Fix warning for VFP function calls from

[clang] [ARM][clang] Fix warning for VFP function calls from interrupts. (PR #91870)

https://github.com/chrisnc updated https://github.com/llvm/llvm-project/pull/91870 >From ef08eb6e2526c5d4f97dbcc42715ae5daf74de3d Mon Sep 17 00:00:00 2001 From: Chris Copeland Date: Sat, 11 May 2024 00:15:50 -0700 Subject: [PATCH] [ARM][clang] Fix warning for VFP function calls from

[clang] [ARM][clang] Fix warning for VFP function calls from interrupts. (PR #91870)

chrisnc wrote: Here is an example of the existing warning in action. https://godbolt.org/z/9e84EfeYP It warns for calling a normal function, but the same function with an interrupt attribute does not warn. The `subs pc, lr, 4` in `bar_irq` goes back to `bl bar_irq`, creating an infinite loop,

[clang] [ARM][clang] Fix warning for VFP function calls from interrupts. (PR #91870)

llvmbot wrote: @llvm/pr-subscribers-clang Author: Chris Copeland (chrisnc) Changes This warning has two issues: - The interrupt attribute doesn't only change how volatile registers are treated; it also causes the function to return using an exception return instruction. This

[clang] [ARM][clang] Fix warning for VFP function calls from interrupts. (PR #91870)

https://github.com/chrisnc created https://github.com/llvm/llvm-project/pull/91870 This warning has two issues: - The interrupt attribute doesn't only change how volatile registers are treated; it also causes the function to return using an exception return instruction. This warning