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[InstCombine] Add unit test with @llvm.annotation.

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In preparation for https://reviews.llvm.org/D98925
This commit is contained in:
Clement Courbet 2021-03-19 08:47:28 +01:00
parent a51f6cd556
commit 98c202121a
1 changed files with 28 additions and 0 deletions
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28
test/Transforms/InstCombine/annotation-intrinsic.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine %s -S -o - | FileCheck %s
; This tests that llvm.annotation does not prevent load combining.
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-grtev4-linux-gnu"
declare i32 @llvm.annotation.i32(i32, i8*, i8*, i32) #1
define dso_local i32 @annotated(i32* %c) local_unnamed_addr #0 {
; CHECK-LABEL: @annotated(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[C:%.*]], align 4
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.annotation.i32(i32 [[TMP0]], i8* undef, i8* undef, i32 undef)
; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[C]], align 4
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret i32 [[ADD]]
;
entry:
%0 = load i32, i32* %c, align 4
%1 = call i32 @llvm.annotation.i32(i32 %0, i8* undef, i8* undef, i32 undef)
%2 = load i32, i32* %c, align 4
%add = add nsw i32 %1, %2
ret i32 %add
}
attributes #0 = { nofree nounwind uwtable willreturn mustprogress }