[Test][PhaseOrdering] Precommit test for PR52289

Author: anton-afanasyev

llvm/test/Transforms/PhaseOrdering/X86/pr52289.ll

@@ -0,0 +1,54 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -O3 -S < %s | FileCheck %s
+
+target datalayout = "n8:16:32:64"
+
+define i32 @main(i32 %a) {
+; CHECK-LABEL: @main(
+; CHECK-NEXT:  if.end:
+; CHECK-NEXT:    [[TMP0:%.*]] = trunc i32 [[A:%.*]] to i8
+; CHECK-NEXT:    [[TMP1:%.*]] = add i8 [[TMP0]], 1
+; CHECK-NEXT:    [[CONV:%.*]] = and i8 [[TMP1]], 8
+; CHECK-NEXT:    [[CMP_I_NOT:%.*]] = icmp eq i8 [[CONV]], 0
+; CHECK-NEXT:    [[SHL_I:%.*]] = select i1 [[CMP_I_NOT]], i8 7, i8 0
+; CHECK-NEXT:    [[COND_I:%.*]] = shl i8 [[CONV]], [[SHL_I]]
+; CHECK-NEXT:    [[CONV1:%.*]] = sext i8 [[COND_I]] to i32
+; CHECK-NEXT:    [[SEXT:%.*]] = mul i32 [[CONV1]], 1355350016
+; CHECK-NEXT:    [[TOBOOL:%.*]] = icmp ne i32 [[SEXT]], 65536
+; CHECK-NEXT:    tail call void @llvm.assume(i1 [[TOBOOL]])
+; CHECK-NEXT:    ret i32 0
+;
+  %inc = add nsw i32 %a, 1
+  %and = and i32 %inc, 8
+  %conv = trunc i32 %and to i8
+  %call = call fastcc i8 @a(i8 %conv, i32 7)
+  %conv1 = sext i8 %call to i64
+  %call2 = call fastcc i64 @d(i64 %conv1)
+  %mul = mul nsw i64 %call2, 20681
+  %conv3 = trunc i64 %mul to i16
+  %conv4 = sext i16 %conv3 to i32
+  %xor = xor i32 %conv4, 1
+  %tobool = icmp ne i32 %xor, 0
+  br i1 %tobool, label %if.end, label %if.then
+
+if.then:
+  call void undef()
+  br label %if.end
+
+if.end:
+  %call5 = call fastcc i8 @a(i8 0, i32 0)
+  ret i32 0
+}
+
+define internal fastcc i8 @a(i8 %h, i32 %i) {
+  %t0 = zext i8 %h to i32
+  %cmp = icmp sgt i32 %t0, %i
+  %shl = shl i32 %t0, %i
+  %cond = select i1 %cmp, i32 %t0, i32 %shl
+  %conv4 = trunc i32 %cond to i8
+  ret i8 %conv4
+}
+
+define internal fastcc i64 @d(i64 %h) {
+  ret i64 %h
+}