[llvm] e0c47d5 - [InstSimplify] Add test for ptr diff without inbounds (NFC)

[Nikita Popov via llvm-commits]

Author: Nikita Popov
Date: 2025-10-09T17:00:40+02:00
New Revision: e0c47d58f882eefc0dc408a570c5ff2ff45e2d36

URL: https://github.com/llvm/llvm-project/commit/e0c47d58f882eefc0dc408a570c5ff2ff45e2d36
DIFF: https://github.com/llvm/llvm-project/commit/e0c47d58f882eefc0dc408a570c5ff2ff45e2d36.diff

LOG: [InstSimplify] Add test for ptr diff without inbounds (NFC)

Also regenerate the test in current format.

Added: 
    

Modified: 
    llvm/test/Transforms/InstSimplify/ptr_diff.ll

Removed: 
    


################################################################################
diff  --git a/llvm/test/Transforms/InstSimplify/ptr_
diff .ll b/llvm/test/Transforms/InstSimplify/ptr_
diff .ll
index d18b462d9bab1..7ca53b096768c 100644
--- a/llvm/test/Transforms/InstSimplify/ptr_
diff .ll
+++ b/llvm/test/Transforms/InstSimplify/ptr_
diff .ll
@@ -1,11 +1,11 @@
-; NOTE: Assertions have been autogenerated by update_test_checks.py
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 
 define i64 @ptr
diff 1(ptr %ptr) {
 ; CHECK-LABEL: @ptr
diff 1(
-; CHECK:         ret i64 42
+; CHECK-NEXT:    ret i64 42
 ;
   %last = getelementptr inbounds i8, ptr %ptr, i32 42
   %first.int = ptrtoint ptr %ptr to i64
@@ -14,9 +14,24 @@ define i64 @ptr
diff 1(ptr %ptr) {
   ret i64 %
diff 
 }
 
+define i64 @ptr
diff _no_inbounds(ptr %ptr) {
+; CHECK-LABEL: @ptr
diff _no_inbounds(
+; CHECK-NEXT:    [[LAST:%.*]] = getelementptr i8, ptr [[PTR:%.*]], i32 42
+; CHECK-NEXT:    [[FIRST_INT:%.*]] = ptrtoint ptr [[PTR]] to i64
+; CHECK-NEXT:    [[LAST_INT:%.*]] = ptrtoint ptr [[LAST]] to i64
+; CHECK-NEXT:    [[DIFF:%.*]] = sub i64 [[LAST_INT]], [[FIRST_INT]]
+; CHECK-NEXT:    ret i64 [[DIFF]]
+;
+  %last = getelementptr i8, ptr %ptr, i32 42
+  %first.int = ptrtoint ptr %ptr to i64
+  %last.int = ptrtoint ptr %last to i64
+  %
diff  = sub i64 %last.int, %first.int
+  ret i64 %
diff 
+}
+
 define i64 @ptr
diff 2(ptr %ptr) {
 ; CHECK-LABEL: @ptr
diff 2(
-; CHECK:         ret i64 42
+; CHECK-NEXT:    ret i64 42
 ;
   %first2 = getelementptr inbounds i8, ptr %ptr, i32 1
   %first3 = getelementptr inbounds i8, ptr %first2, i32 2
@@ -34,10 +49,10 @@ define i64 @ptr
diff 2(ptr %ptr) {
 define i64 @ptr
diff 3(ptr %ptr) {
 ; Don't bother with non-inbounds GEPs.
 ; CHECK-LABEL: @ptr
diff 3(
-; CHECK:         [[LAST:%.*]] = getelementptr i8, ptr %ptr, i32 42
-; CHECK-NEXT:    [[FIRST_INT:%.*]] = ptrtoint ptr %ptr to i64
+; CHECK-NEXT:    [[LAST1:%.*]] = getelementptr i8, ptr [[LAST:%.*]], i32 42
 ; CHECK-NEXT:    [[LAST_INT:%.*]] = ptrtoint ptr [[LAST]] to i64
-; CHECK-NEXT:    [[DIFF:%.*]] = sub i64 [[LAST_INT]], [[FIRST_INT]]
+; CHECK-NEXT:    [[LAST_INT1:%.*]] = ptrtoint ptr [[LAST1]] to i64
+; CHECK-NEXT:    [[DIFF:%.*]] = sub i64 [[LAST_INT1]], [[LAST_INT]]
 ; CHECK-NEXT:    ret i64 [[DIFF]]
 ;
   %last = getelementptr i8, ptr %ptr, i32 42
@@ -50,7 +65,7 @@ define i64 @ptr
diff 3(ptr %ptr) {
 define <4 x i32> @ptr
diff 4(<4 x ptr> %arg) nounwind {
 ; Handle simple cases of vectors of pointers.
 ; CHECK-LABEL: @ptr
diff 4(
-; CHECK:         ret <4 x i32> zeroinitializer
+; CHECK-NEXT:    ret <4 x i32> zeroinitializer
 ;
   %p1 = ptrtoint <4 x ptr> %arg to <4 x i32>
   %bc = bitcast <4 x ptr> %arg to <4 x ptr>
@@ -65,7 +80,7 @@ define <4 x i32> @ptr
diff 4(<4 x ptr> %arg) nounwind {
 
 define i32 @ptr
diff 5() nounwind {
 ; CHECK-LABEL: @ptr
diff 5(
-; CHECK:       bb:
+; CHECK-NEXT:  bb:
 ; CHECK-NEXT:    ret i32 0
 ;
 bb: