[llvm] [RISCV][GISel] Support G_ABS with Zbb. (PR #72939)

[Michael Maitland via llvm-commits]

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@@ -0,0 +1,161 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -global-isel -verify-machineinstrs < %s \
+; RUN:   | FileCheck %s --check-prefix=RV32I
+; RUN: llc -mtriple=riscv32 -global-isel -mattr=+zbb -verify-machineinstrs < %s \
+; RUN:   | FileCheck %s --check-prefix=RV32ZBB
+; RUN: llc -mtriple=riscv64 -global-isel -verify-machineinstrs < %s \
+; RUN:   | FileCheck %s --check-prefix=RV64I
+; RUN: llc -mtriple=riscv64 -global-isel -mattr=+zbb -verify-machineinstrs < %s \
+; RUN:   | FileCheck %s --check-prefix=RV64ZBB
+
+declare i8 @llvm.abs.i8(i8, i1 immarg)
+declare i16 @llvm.abs.i16(i16, i1 immarg)
+declare i32 @llvm.abs.i32(i32, i1 immarg)
+declare i64 @llvm.abs.i64(i64, i1 immarg)
+declare i128 @llvm.abs.i128(i128, i1 immarg)
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michaelmaitland wrote:

`i128 @llvm.abs.i128(i128, i1 immarg)` is unused.

https://github.com/llvm/llvm-project/pull/72939