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c5bda355e6
Similar to the FP case in `AArch64TargetLowering::LowerBR_CC`. Instead of emitting the csets + a tbnz, just emit a compare + bcc (or two bccs, depending on the condition code) This improves cases like this: https://godbolt.org/z/v8hebx This is a 0.1% geomean code size improvement for CTMark at -O3. Differential Revision: https://reviews.llvm.org/D88624
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