From 9e5f1ea427c3fedf40664bff3448959df8d89c94 Mon Sep 17 00:00:00 2001
From: Roman Lebedev <lebedev.ri@gmail.com>
Date: Wed, 18 Jul 2018 08:49:51 +0000
Subject: [PATCH] [NFC][InstCombine] i65 tests for 'check for [no] signed
 truncation' pattern

Those initially broke chromium build:
https://bugs.llvm.org/show_bug.cgi?id=38204 and
https://crbug.com/864832

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337364 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../canonicalize-lack-of-signed-truncation-check.ll        | 14 ++++++++++++++
 .../InstCombine/canonicalize-signed-truncation-check.ll    | 14 ++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/test/Transforms/InstCombine/canonicalize-lack-of-signed-truncation-check.ll b/test/Transforms/InstCombine/canonicalize-lack-of-signed-truncation-check.ll
index 5ed22292aab..2e75ae60571 100644
--- a/test/Transforms/InstCombine/canonicalize-lack-of-signed-truncation-check.ll
+++ b/test/Transforms/InstCombine/canonicalize-lack-of-signed-truncation-check.ll
@@ -26,6 +26,20 @@ define i1 @p0(i8 %x) {
   ret i1 %tmp2
 }
 
+; Big unusual bit width, https://bugs.llvm.org/show_bug.cgi?id=38204
+define i1 @pb(i65 %x) {
+; CHECK-LABEL: @pb(
+; CHECK-NEXT:    [[TMP0:%.*]] = shl i65 [[X:%.*]], 1
+; CHECK-NEXT:    [[TMP1:%.*]] = ashr exact i65 [[TMP0]], 1
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq i65 [[TMP1]], [[X]]
+; CHECK-NEXT:    ret i1 [[TMP2]]
+;
+  %tmp0 = shl i65 %x, 1
+  %tmp1 = ashr exact i65 %tmp0, 1
+  %tmp2 = icmp eq i65 %x, %tmp1
+  ret i1 %tmp2
+}
+
 ; ============================================================================ ;
 ; Vector tests
 ; ============================================================================ ;
diff --git a/test/Transforms/InstCombine/canonicalize-signed-truncation-check.ll b/test/Transforms/InstCombine/canonicalize-signed-truncation-check.ll
index ca08a33ae99..6cd32db8224 100644
--- a/test/Transforms/InstCombine/canonicalize-signed-truncation-check.ll
+++ b/test/Transforms/InstCombine/canonicalize-signed-truncation-check.ll
@@ -26,6 +26,20 @@ define i1 @p0(i8 %x) {
   ret i1 %tmp2
 }
 
+; Big unusual bit width, https://bugs.llvm.org/show_bug.cgi?id=38204
+define i1 @pb(i65 %x) {
+; CHECK-LABEL: @pb(
+; CHECK-NEXT:    [[TMP0:%.*]] = shl i65 [[X:%.*]], 1
+; CHECK-NEXT:    [[TMP1:%.*]] = ashr exact i65 [[TMP0]], 1
+; CHECK-NEXT:    [[TMP2:%.*]] = icmp ne i65 [[TMP1]], [[X]]
+; CHECK-NEXT:    ret i1 [[TMP2]]
+;
+  %tmp0 = shl i65 %x, 1
+  %tmp1 = ashr exact i65 %tmp0, 1
+  %tmp2 = icmp ne i65 %x, %tmp1
+  ret i1 %tmp2
+}
+
 ; ============================================================================ ;
 ; Vector tests
 ; ============================================================================ ;
-- 
2.11.0