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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py2; RUN: llc < %s | FileCheck %s3;4; PR11431: handle a phi operand that is replaced by a postinc user.5; LSR first expands %t3 to %t2 in %phi6; LSR then expands %t2 in %phi into two decrements, one on each loop exit.7 8target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-f128:128:128-n8:16:32:64"9target triple = "x86_64-unknown-linux-gnu"10 11declare i1 @check() nounwind12 13; Check that LSR did something close to the behavior at the time of the bug.14define i64 @sqlite3DropTriggerPtr() nounwind {15; CHECK-LABEL: sqlite3DropTriggerPtr:16; CHECK: # %bb.0: # %bb17; CHECK-NEXT: pushq %rbx18; CHECK-NEXT: movl $1, %ebx19; CHECK-NEXT: callq check@PLT20; CHECK-NEXT: .p2align 421; CHECK-NEXT: .LBB0_1: # %bb122; CHECK-NEXT: # =>This Inner Loop Header: Depth=123; CHECK-NEXT: testb %al, %al24; CHECK-NEXT: je .LBB0_425; CHECK-NEXT: # %bb.2: # %bb426; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=127; CHECK-NEXT: incq %rbx28; CHECK-NEXT: testb %al, %al29; CHECK-NEXT: jne .LBB0_130; CHECK-NEXT: # %bb.3: # %bb8split31; CHECK-NEXT: decq %rbx32; CHECK-NEXT: .LBB0_4: # %bb833; CHECK-NEXT: movq %rbx, %rax34; CHECK-NEXT: popq %rbx35; CHECK-NEXT: retq36bb:37 %cmp = call zeroext i1 @check()38 br label %bb139 40bb1: ; preds = %bb4, %bb41 %t0 = phi i64 [ 0, %bb ], [ %t3, %bb4 ]42 %t2 = phi i64 [ 1, %bb ], [ %t5, %bb4 ]43 %t3 = add nsw i64 %t0, 144 br i1 %cmp, label %bb4, label %bb845 46bb4: ; preds = %bb147 %t5 = add nsw i64 %t2, 148 br i1 %cmp, label %bb1, label %bb849 50bb8: ; preds = %bb8, %bb451 %phi = phi i64 [ %t3, %bb1 ], [ %t2, %bb4 ]52 ret i64 %phi53}54