xref: /llvm-project/llvm/test/Transforms/InstCombine/constant-fold-iteration.ll (revision f78610af3feb88f0e1edb2482dc77490fb4cad77)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
2; RUN: opt < %s -passes=instcombine -S -debug 2>&1 | FileCheck %s
3; REQUIRES: asserts
4target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"
5
6; This test disables fixpoint verification, because that would cause a second
7; iteration for verification.
8
9define i32 @a() nounwind readnone "instcombine-no-verify-fixpoint" {
10entry:
11  %cmp = icmp eq i32 0, ptrtoint (ptr @a to i32)
12  %ext = zext i1 %cmp to i32
13  ret i32 %ext
14}
15; CHECK: INSTCOMBINE ITERATION #1
16; CHECK-NOT: INSTCOMBINE ITERATION #2
17