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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py2; RUN: llc -O3 < %s -aarch64-enable-atomic-cfg-tidy=0 -aarch64-enable-gep-opt=false -verify-machineinstrs | FileCheck %s3target triple = "arm64-apple-ios"4 5; rdar://124620066; CSE between "icmp reg reg" and "sub reg reg".7; Both can be in the same basic block or in different basic blocks.8define ptr @t1(ptr %base, ptr nocapture %offset, i32 %size) nounwind {9; CHECK-LABEL: t1:10; CHECK: ; %bb.0: ; %entry11; CHECK-NEXT: ldr w8, [x1]12; CHECK-NEXT: subs w9, w8, w213; CHECK-NEXT: b.ge LBB0_214; CHECK-NEXT: ; %bb.1:15; CHECK-NEXT: mov x0, xzr16; CHECK-NEXT: ret17; CHECK-NEXT: LBB0_2: ; %if.end18; CHECK-NEXT: add x0, x0, w9, sxtw19; CHECK-NEXT: sub w8, w8, w920; CHECK-NEXT: str w8, [x1]21; CHECK-NEXT: ret22entry:23 %0 = load i32, ptr %offset, align 424 %cmp = icmp slt i32 %0, %size25 %s = sub nsw i32 %0, %size26 br i1 %cmp, label %return, label %if.end27 28if.end:29 %sub = sub nsw i32 %0, %size30 %s2 = sub nsw i32 %s, %size31 %s3 = sub nsw i32 %sub, %s232 store i32 %s3, ptr %offset, align 433 %add.ptr = getelementptr inbounds i8, ptr %base, i32 %sub34 br label %return35 36return:37 %retval.0 = phi ptr [ %add.ptr, %if.end ], [ null, %entry ]38 ret ptr %retval.039}40 41; CSE between "icmp reg imm" and "sub reg imm".42define ptr @t2(ptr %base, ptr nocapture %offset) nounwind {43; CHECK-LABEL: t2:44; CHECK: ; %bb.0: ; %entry45; CHECK-NEXT: ldr w8, [x1]46; CHECK-NEXT: subs w8, w8, #147; CHECK-NEXT: b.lt LBB1_248; CHECK-NEXT: ; %bb.1: ; %if.end49; CHECK-NEXT: add x0, x0, w8, sxtw50; CHECK-NEXT: str w8, [x1]51; CHECK-NEXT: ret52; CHECK-NEXT: LBB1_2:53; CHECK-NEXT: mov x0, xzr54; CHECK-NEXT: ret55entry:56 %0 = load i32, ptr %offset, align 457 %cmp = icmp slt i32 %0, 158 br i1 %cmp, label %return, label %if.end59 60if.end:61 %sub = sub nsw i32 %0, 162 store i32 %sub, ptr %offset, align 463 %add.ptr = getelementptr inbounds i8, ptr %base, i32 %sub64 br label %return65 66return:67 %retval.0 = phi ptr [ %add.ptr, %if.end ], [ null, %entry ]68 ret ptr %retval.069}70