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 11 declare i64 @bar() 12 13 define i1 @foo() nounwind { 14 entry: 15 br label %for.cond.i 16 17 for.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 29 define void @func_37() noreturn nounwind readonly { 30 entry: 31 br label %for.body 32 33 for.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 39 for.cond4: ; preds = %for.cond4, %for.body 40 br label %for.cond4 41 42 for.inc8: ; preds = %for.body 43 %indvar.next = add i64 %indvar, 1 44 br label %for.body 45 } 46
