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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
; Make sure dagcombine doesn't eliminate the comparison due
; to an off-by-one bug with computeKnownBits information.
declare void @qux()
define void @foo(i32 %a) {
; CHECK-LABEL: foo:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: shrl $23, %edi
; CHECK-NEXT: testl $256, %edi # imm = 0x100
; CHECK-NEXT: jne .LBB0_2
; CHECK-NEXT: # %bb.1: # %true
; CHECK-NEXT: callq qux
; CHECK-NEXT: .LBB0_2: # %false
; CHECK-NEXT: popq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 8
; CHECK-NEXT: retq
%t0 = lshr i32 %a, 23
br label %next
next:
%t1 = and i32 %t0, 256
%t2 = icmp eq i32 %t1, 0
br i1 %t2, label %true, label %false
true:
call void @qux()
ret void
false:
ret void
}
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