68 lines
2.3 KiB
LLVM
68 lines
2.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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@hello = constant [6 x i8] c"hello\00"
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@null = constant [1 x i8] zeroinitializer
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declare i8* @strndup(i8*, i32)
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define i8* @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[STRDUP:%.*]] = call dereferenceable_or_null(1) i8* @strdup(i8* getelementptr inbounds ([1 x i8], [1 x i8]* @null, i64 0, i64 0))
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; CHECK-NEXT: ret i8* [[STRDUP]]
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;
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%src = getelementptr [1 x i8], [1 x i8]* @null, i32 0, i32 0
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%ret = call i8* @strndup(i8* %src, i32 0)
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ret i8* %ret
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}
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define i8* @test2() {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[RET:%.*]] = call dereferenceable_or_null(5) i8* @strndup(i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i64 0, i64 0), i32 4)
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; CHECK-NEXT: ret i8* [[RET]]
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;
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%src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0
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%ret = call i8* @strndup(i8* %src, i32 4)
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ret i8* %ret
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}
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define i8* @test3() {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[STRDUP:%.*]] = call dereferenceable_or_null(6) i8* @strdup(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i64 0, i64 0))
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; CHECK-NEXT: ret i8* [[STRDUP]]
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;
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%src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0
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%ret = call i8* @strndup(i8* %src, i32 5)
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ret i8* %ret
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}
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define i8* @test4() {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[STRDUP:%.*]] = call dereferenceable_or_null(6) i8* @strdup(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i64 0, i64 0))
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; CHECK-NEXT: ret i8* [[STRDUP]]
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;
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%src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0
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%ret = call i8* @strndup(i8* %src, i32 6)
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ret i8* %ret
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}
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define i8* @test5() {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[STRDUP:%.*]] = call dereferenceable_or_null(6) i8* @strdup(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i64 0, i64 0))
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; CHECK-NEXT: ret i8* [[STRDUP]]
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;
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%src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0
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%ret = call i8* @strndup(i8* %src, i32 7)
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ret i8* %ret
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}
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define i8* @test6(i32 %n) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: [[RET:%.*]] = call i8* @strndup(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @hello, i64 0, i64 0), i32 [[N:%.*]])
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; CHECK-NEXT: ret i8* [[RET]]
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;
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%src = getelementptr [6 x i8], [6 x i8]* @hello, i32 0, i32 0
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%ret = call i8* @strndup(i8* %src, i32 %n)
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ret i8* %ret
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}
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