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93 lines
2.8 KiB
LLVM
93 lines
2.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; Test that the strrchr library call simplifier works correctly.
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; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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@hello = constant [14 x i8] c"hello world\5Cn\00"
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@null = constant [1 x i8] zeroinitializer
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@chp = global i8* zeroinitializer
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declare i8* @strrchr(i8*, i32)
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define void @test_simplify1() {
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; CHECK-LABEL: @test_simplify1(
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; CHECK-NEXT: store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @hello, i32 0, i32 6), i8** @chp, align 4
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; CHECK-NEXT: ret void
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;
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%str = getelementptr [14 x i8], [14 x i8]* @hello, i32 0, i32 0
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%dst = call i8* @strrchr(i8* %str, i32 119)
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store i8* %dst, i8** @chp
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ret void
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}
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define void @test_simplify2() {
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; CHECK-LABEL: @test_simplify2(
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; CHECK-NEXT: store i8* null, i8** @chp, align 4
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; CHECK-NEXT: ret void
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;
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%str = getelementptr [1 x i8], [1 x i8]* @null, i32 0, i32 0
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%dst = call i8* @strrchr(i8* %str, i32 119)
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store i8* %dst, i8** @chp
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ret void
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}
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define void @test_simplify3() {
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; CHECK-LABEL: @test_simplify3(
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; CHECK-NEXT: store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @hello, i32 0, i32 13), i8** @chp, align 4
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; CHECK-NEXT: ret void
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;
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%src = getelementptr [14 x i8], [14 x i8]* @hello, i32 0, i32 0
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%dst = call i8* @strrchr(i8* %src, i32 0)
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store i8* %dst, i8** @chp
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ret void
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}
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define void @test_simplify4() {
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; CHECK-LABEL: @test_simplify4(
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; CHECK-NEXT: store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @hello, i32 0, i32 13), i8** @chp, align 4
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; CHECK-NEXT: ret void
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;
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%src = getelementptr [14 x i8], [14 x i8]* @hello, i32 0, i32 0
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%dst = call i8* @strrchr(i8* %src, i32 65280)
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store i8* %dst, i8** @chp
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ret void
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}
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define void @test_nosimplify1(i32 %chr) {
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; CHECK-LABEL: @test_nosimplify1(
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; CHECK-NEXT: [[DST:%.*]] = call i8* @strrchr(i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @hello, i32 0, i32 0), i32 [[CHR:%.*]])
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; CHECK-NEXT: store i8* [[DST]], i8** @chp, align 4
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; CHECK-NEXT: ret void
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;
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%src = getelementptr [14 x i8], [14 x i8]* @hello, i32 0, i32 0
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%dst = call i8* @strrchr(i8* %src, i32 %chr)
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store i8* %dst, i8** @chp
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ret void
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}
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define i8* @test1(i8* %str, i32 %c) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[RET:%.*]] = call i8* @strrchr(i8* noundef nonnull dereferenceable(1) [[STR:%.*]], i32 [[C:%.*]])
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; CHECK-NEXT: ret i8* [[RET]]
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;
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%ret = call i8* @strrchr(i8* %str, i32 %c)
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ret i8* %ret
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}
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define i8* @test2(i8* %str, i32 %c) null_pointer_is_valid {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[RET:%.*]] = call i8* @strrchr(i8* noundef [[STR:%.*]], i32 [[C:%.*]])
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; CHECK-NEXT: ret i8* [[RET]]
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;
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%ret = call i8* @strrchr(i8* %str, i32 %c)
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ret i8* %ret
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}
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