63 lines
1.7 KiB
LLVM
63 lines
1.7 KiB
LLVM
; Verify that calls to known stdio library functions declared with
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; incompatible signatures are handled gracefully and without aborting.
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;
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instcombine -opaque-pointers -S | FileCheck %s
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declare i32 @fwrite(i8*, i64, i64, ptr)
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declare i8 @fputc(ptr, ptr)
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declare void @printf(ptr)
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declare i8 @fprintf(ptr, ptr)
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declare i8 @sprintf(ptr, ptr)
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@ca1 = constant [1 x i8] c"1"
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@pcnt_s = constant [3 x i8] c"%s\00"
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; Verify that a call to fwrite isn't transformed into one to fputc when
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; the latter is declared with an incompatible signature (which might
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; trigger an abort).
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define void @call_fwrite(ptr %fp) {
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%p = getelementptr [1 x i8], ptr @ca1, i32 0, i32 0
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call i32 @fwrite(ptr %p, i64 1, i64 1, ptr %fp)
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ret void
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}
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; Verify that a call to an incompatible void printf(char*) with just "%s"
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; isn't transformed.
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define void @call_printf(ptr %s) {
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; CHECK-LABEL: @call_printf(
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;
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%fmt = getelementptr [3 x i8], ptr @pcnt_s, i32 0, i32 0
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call i32 @printf(ptr %fmt)
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ret void
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}
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; Verify that a call to an incompatible int fprintf(FILE*, char*) isn't
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; transformed.
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define i8 @call_fprintf(ptr %fp, ptr %p) {
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; CHECK-LABEL: @call_fprintf(
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;
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%fmt = getelementptr [3 x i8], ptr @pcnt_s, i32 0, i32 0
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%call = call i8 (ptr, ptr, ...) @fprintf(ptr %fp, ptr %fmt, ptr %p)
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ret i8 %call
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}
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; Verify that a call to an incompatible int sprintf(FILE*, char*) isn't
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; transformed.
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define i8 @call_sprintf(ptr %p, ptr %q) {
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; CHECK-LABEL: @call_sprintf(
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;
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%fmt = getelementptr [3 x i8], ptr @pcnt_s, i32 0, i32 0
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%call = call i8 (ptr, ptr, ...) @sprintf(ptr %p, ptr %fmt, ptr %q)
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ret i8 %call
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}
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