forked from OSchip/llvm-project
80 lines
3.3 KiB
LLVM
80 lines
3.3 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 = private constant [11 x i8] c"helloworld\00", align 1
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declare i8* @memccpy(i8*, i8*, i32, i64)
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define i8* @memccpy_to_memcpy(i8* %dst) {
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; CHECK-LABEL: @memccpy_to_memcpy(
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; CHECK-NEXT: [[CALL:%.*]] = call i8* @memccpy(i8* [[DST:%.*]], i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 114, i64 12)
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; CHECK-NEXT: ret i8* [[CALL]]
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;
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%call = call i8* @memccpy(i8* %dst, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 114, i64 12) ; 114 is 'r'
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ret i8* %call
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}
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define i8* @memccpy_to_memcpy2(i8* %dst) {
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; CHECK-LABEL: @memccpy_to_memcpy2(
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; CHECK-NEXT: [[CALL:%.*]] = call i8* @memccpy(i8* [[DST:%.*]], i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 114, i64 5)
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; CHECK-NEXT: ret i8* [[CALL]]
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;
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%call = call i8* @memccpy(i8* %dst, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 114, i64 5)
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ret i8* %call
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}
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define void @memccpy_to_memcpy3(i8* %dst) {
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; CHECK-LABEL: @memccpy_to_memcpy3(
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; CHECK-NEXT: [[CALL:%.*]] = call i8* @memccpy(i8* [[DST:%.*]], i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 114, i64 5)
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; CHECK-NEXT: ret void
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;
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%call = call i8* @memccpy(i8* %dst, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 114, i64 5)
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ret void
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}
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define i8* @memccpy_to_null(i8* %dst, i8* %src, i32 %c) {
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; CHECK-LABEL: @memccpy_to_null(
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; CHECK-NEXT: [[CALL:%.*]] = call i8* @memccpy(i8* [[DST:%.*]], i8* [[SRC:%.*]], i32 [[C:%.*]], i64 0)
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; CHECK-NEXT: ret i8* [[CALL]]
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;
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%call = call i8* @memccpy(i8* %dst, i8* %src, i32 %c, i64 0)
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ret i8* %call
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}
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define i8* @memccpy_to_null2(i8* %dst) {
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; CHECK-LABEL: @memccpy_to_null2(
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; CHECK-NEXT: [[CALL:%.*]] = call i8* @memccpy(i8* [[DST:%.*]], i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 115, i64 5)
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; CHECK-NEXT: ret i8* [[CALL]]
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;
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%call = call i8* @memccpy(i8* %dst, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 115, i64 5) ; 115 is 's'
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ret i8* %call
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}
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; Negative tests
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define i8* @unknown_src(i8* %dst, i8* %src) {
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; CHECK-LABEL: @unknown_src(
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; CHECK-NEXT: [[CALL:%.*]] = call i8* @memccpy(i8* [[DST:%.*]], i8* [[SRC:%.*]], i32 114, i64 12)
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; CHECK-NEXT: ret i8* [[CALL]]
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;
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%call = call i8* @memccpy(i8* %dst, i8* %src, i32 114, i64 12)
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ret i8* %call
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}
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define i8* @unknown_stop_char(i8* %dst, i32 %c) {
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; CHECK-LABEL: @unknown_stop_char(
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; CHECK-NEXT: [[CALL:%.*]] = call i8* @memccpy(i8* [[DST:%.*]], i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 [[C:%.*]], i64 12)
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; CHECK-NEXT: ret i8* [[CALL]]
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;
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%call = call i8* @memccpy(i8* %dst, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 %c, i64 12)
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ret i8* %call
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}
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define i8* @unknown_size_n(i8* %dst, i64 %n) {
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; CHECK-LABEL: @unknown_size_n(
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; CHECK-NEXT: [[CALL:%.*]] = call i8* @memccpy(i8* [[DST:%.*]], i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 114, i64 [[N:%.*]])
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; CHECK-NEXT: ret i8* [[CALL]]
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;
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%call = call i8* @memccpy(i8* %dst, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @hello, i64 0, i64 0), i32 114, i64 %n)
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ret i8* %call
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}
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