[llvm] [TTI][TLI] Support scalable immediates with isLegalAddImmediate (PR #84173)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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git-clang-format --diff c4979c935f778eca623afd17dad6f97facba34bf 5125e7530fe293acdfd4b5e98cf57622f074a699 -- llvm/unittests/Target/AArch64/Immediates.cpp llvm/include/llvm/Analysis/TargetTransformInfo.h llvm/include/llvm/Analysis/TargetTransformInfoImpl.h llvm/include/llvm/CodeGen/BasicTTIImpl.h llvm/include/llvm/CodeGen/TargetLowering.h llvm/lib/Analysis/TargetTransformInfo.cpp llvm/lib/Target/AArch64/AArch64ISelLowering.cpp llvm/lib/Target/AArch64/AArch64ISelLowering.h llvm/lib/Target/ARM/ARMISelLowering.cpp llvm/lib/Target/ARM/ARMISelLowering.h llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp llvm/lib/Target/LoongArch/LoongArchISelLowering.h llvm/lib/Target/PowerPC/PPCISelLowering.cpp llvm/lib/Target/PowerPC/PPCISelLowering.h llvm/lib/Target/RISCV/RISCVISelLowering.cpp llvm/lib/Target/RISCV/RISCVISelLowering.h llvm/lib/Target/SystemZ/SystemZISelLowering.cpp llvm/lib/Target/SystemZ/SystemZISelLowering.h llvm/lib/Target/X86/X86ISelLowering.cpp llvm/lib/Target/X86/X86ISelLowering.h
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View the diff from clang-format here.
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diff --git a/llvm/unittests/Target/AArch64/Immediates.cpp b/llvm/unittests/Target/AArch64/Immediates.cpp
index 5f5895e44c..e8733de174 100644
--- a/llvm/unittests/Target/AArch64/Immediates.cpp
+++ b/llvm/unittests/Target/AArch64/Immediates.cpp
@@ -58,10 +58,9 @@ TEST(Immediates, Immediates) {
   auto TT = Triple::normalize("aarch64");
   const Target *T = TargetRegistry::lookupTarget(TT, Error);
 
-  std::unique_ptr<TargetMachine> TM(
-      T->createTargetMachine(TT, "generic", "+sve", TargetOptions(),
-                             std::nullopt, std::nullopt,
-                             CodeGenOptLevel::Default));
+  std::unique_ptr<TargetMachine> TM(T->createTargetMachine(
+      TT, "generic", "+sve", TargetOptions(), std::nullopt, std::nullopt,
+      CodeGenOptLevel::Default));
   AArch64Subtarget ST(TM->getTargetTriple(), TM->getTargetCPU(),
                       TM->getTargetCPU(), TM->getTargetFeatureString(), *TM,
                       true);

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https://github.com/llvm/llvm-project/pull/84173