1; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s 2; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s 3 4; The comparison uses the pre-inc value, which could lead LSR to 5; try to compute -INT64_MIN. 6 7; CHECK: movabsq $-9223372036854775808, %rax 8; CHECK: cmpq %rax, 9; CHECK: sete %al 10 11declare i64 @bar() 12 13define i1 @foo() nounwind { 14entry: 15 br label %for.cond.i 16 17for.cond.i: 18 %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.cond.i ] 19 %t = call i64 @bar() 20 %indvar.next = add i64 %indvar, 1 21 %s = icmp ne i64 %indvar.next, %t 22 br i1 %s, label %for.cond.i, label %__ABContainsLabel.exit 23 24__ABContainsLabel.exit: 25 %cmp = icmp eq i64 %indvar, 9223372036854775807 26 ret i1 %cmp 27} 28 29define void @func_37() noreturn nounwind readonly { 30entry: 31 br label %for.body 32 33for.body: ; preds = %for.inc8, %entry 34 %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.inc8 ] 35 %sub.i = add i64 undef, %indvar 36 %cmp.i = icmp eq i64 %sub.i, -9223372036854775808 37 br i1 undef, label %for.inc8, label %for.cond4 38 39for.cond4: ; preds = %for.cond4, %for.body 40 br label %for.cond4 41 42for.inc8: ; preds = %for.body 43 %indvar.next = add i64 %indvar, 1 44 br label %for.body 45} 46