-
Notifications
You must be signed in to change notification settings - Fork 10.8k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[ConstraintElim] Add tests for #78621.
Tests with umin where the result may be poison for #78621.
- Loading branch information
Showing
1 changed file
with
60 additions
and
0 deletions.
There are no files selected for viewing
60 changes: 60 additions & 0 deletions
60
llvm/test/Transforms/ConstraintElimination/umin-result-may-be-poison.ll
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 | ||
| ; RUN: opt -p constraint-elimination -S %s | FileCheck %s | ||
|
|
||
| ; Tests for https://github.com/llvm/llvm-project/issues/78621. | ||
|
|
||
| define i1 @umin_not_used(i32 %arg) { | ||
| ; CHECK-LABEL: define i1 @umin_not_used( | ||
| ; CHECK-SAME: i32 [[ARG:%.*]]) { | ||
| ; CHECK-NEXT: [[SHL:%.*]] = shl nuw nsw i32 [[ARG]], 3 | ||
| ; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.umin.i32(i32 [[SHL]], i32 80) | ||
| ; CHECK-NEXT: [[CMP2:%.*]] = shl nuw nsw i32 [[ARG]], 3 | ||
| ; CHECK-NEXT: ret i1 false | ||
| ; | ||
| %icmp = icmp slt i32 %arg, 0 | ||
| %shl = shl nuw nsw i32 %arg, 3 | ||
| call i32 @llvm.umin.i32(i32 %shl, i32 80) | ||
| %cmp2 = shl nuw nsw i32 %arg, 3 | ||
| ret i1 %icmp | ||
| } | ||
|
|
||
| define i1 @umin_poison_is_UB_via_call(i32 %arg) { | ||
| ; CHECK-LABEL: define i1 @umin_poison_is_UB_via_call( | ||
| ; CHECK-SAME: i32 [[ARG:%.*]]) { | ||
| ; CHECK-NEXT: [[SHL:%.*]] = shl nuw nsw i32 [[ARG]], 3 | ||
| ; CHECK-NEXT: [[MIN:%.*]] = call i32 @llvm.umin.i32(i32 [[SHL]], i32 80) | ||
| ; CHECK-NEXT: call void @noundef(i32 noundef [[MIN]]) | ||
| ; CHECK-NEXT: [[CMP2:%.*]] = shl nuw nsw i32 [[ARG]], 3 | ||
| ; CHECK-NEXT: ret i1 false | ||
| ; | ||
| %icmp = icmp slt i32 %arg, 0 | ||
| %shl = shl nuw nsw i32 %arg, 3 | ||
| %min = call i32 @llvm.umin.i32(i32 %shl, i32 80) | ||
| call void @noundef(i32 noundef %min) | ||
| %cmp2 = shl nuw nsw i32 %arg, 3 | ||
| ret i1 %icmp | ||
| } | ||
|
|
||
| define i1 @umin_poison_call_before_UB(i32 %arg) { | ||
| ; CHECK-LABEL: define i1 @umin_poison_call_before_UB( | ||
| ; CHECK-SAME: i32 [[ARG:%.*]]) { | ||
| ; CHECK-NEXT: [[SHL:%.*]] = shl nuw nsw i32 [[ARG]], 3 | ||
| ; CHECK-NEXT: [[MIN:%.*]] = call i32 @llvm.umin.i32(i32 [[SHL]], i32 80) | ||
| ; CHECK-NEXT: call void @fn() | ||
| ; CHECK-NEXT: call void @noundef(i32 noundef [[MIN]]) | ||
| ; CHECK-NEXT: [[CMP2:%.*]] = shl nuw nsw i32 [[ARG]], 3 | ||
| ; CHECK-NEXT: ret i1 false | ||
| ; | ||
| %icmp = icmp slt i32 %arg, 0 | ||
| %shl = shl nuw nsw i32 %arg, 3 | ||
| %min = call i32 @llvm.umin.i32(i32 %shl, i32 80) | ||
| call void @fn() | ||
| call void @noundef(i32 noundef %min) | ||
| %cmp2 = shl nuw nsw i32 %arg, 3 | ||
| ret i1 %icmp | ||
| } | ||
|
|
||
| declare i32 @llvm.umin.i32(i32, i32) #0 | ||
|
|
||
| declare void @noundef(i32 noundef) | ||
| declare void @fn() |