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| author | David Bolvansky <david.bolvansky@gmail.com> | 2018-10-13 15:21:55 +0000 |
|---|---|---|
| committer | David Bolvansky <david.bolvansky@gmail.com> | 2018-10-13 15:21:55 +0000 |
| commit | e8b3bba71765b6d6dbd9e8ad8911327b47c05366 (patch) | |
| tree | 82cc09465f39af0c4e28712bdd8825e4b8e8afa4 /llvm/test | |
| parent | 1c2051ead7fa9eaee3f7e21b5e7cf4915a7232b3 (diff) | |
| download | bcm5719-llvm-e8b3bba71765b6d6dbd9e8ad8911327b47c05366.tar.gz bcm5719-llvm-e8b3bba71765b6d6dbd9e8ad8911327b47c05366.zip | |
[InstCombine] Fixed crash with aliased functions
Summary: Fixes PR39177
Reviewers: spatel, jbuening
Reviewed By: jbuening
Subscribers: jbuening, llvm-commits
Differential Revision: https://reviews.llvm.org/D53129
llvm-svn: 344454
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/pr39177.ll | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/pr39177.ll b/llvm/test/Transforms/InstCombine/pr39177.ll new file mode 100644 index 00000000000..750e17a01f1 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/pr39177.ll @@ -0,0 +1,66 @@ +; RUN: opt < %s -instcombine -S + +%struct._IO_FILE = type { i32, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, %struct._IO_marker*, %struct._IO_FILE*, i32, i32, i64, i16, i8, [1 x i8], i8*, i64, i8*, i8*, i8*, i8*, i64, i32, [20 x i8] } +%struct._IO_marker = type { %struct._IO_marker*, %struct._IO_FILE*, i32 } + +@stderr = external global %struct._IO_FILE*, align 8 +@.str = private constant [8 x i8] c"crash!\0A\00", align 1 + +@fwrite = alias i64 (i8*, i64, i64, %struct._IO_FILE*), i64 (i8*, i64, i64, %struct._IO_FILE*)* @__fwrite_alias + +define i64 @__fwrite_alias(i8* %ptr, i64 %size, i64 %n, %struct._IO_FILE* %s) { +entry: + %ptr.addr = alloca i8*, align 8 + %size.addr = alloca i64, align 8 + %n.addr = alloca i64, align 8 + %s.addr = alloca %struct._IO_FILE*, align 8 + store i8* %ptr, i8** %ptr.addr, align 8 + store i64 %size, i64* %size.addr, align 8 + store i64 %n, i64* %n.addr, align 8 + store %struct._IO_FILE* %s, %struct._IO_FILE** %s.addr, align 8 + ret i64 0 +} + +define void @foo() { +entry: + %retval = alloca i32, align 4 + store i32 0, i32* %retval, align 4 + %0 = load %struct._IO_FILE*, %struct._IO_FILE** @stderr, align 8 + %call = call i32 (%struct._IO_FILE*, i8*, ...) @fprintf(%struct._IO_FILE* %0, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0)) + ret void +} + +declare i32 @fprintf(%struct._IO_FILE*, i8*, ...) +; RUN: opt < %s -instcombine -S + +%struct._IO_FILE = type { i32, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, %struct._IO_marker*, %struct._IO_FILE*, i32, i32, i64, i16, i8, [1 x i8], i8*, i64, i8*, i8*, i8*, i8*, i64, i32, [20 x i8] } +%struct._IO_marker = type { %struct._IO_marker*, %struct._IO_FILE*, i32 } + +@stderr = external global %struct._IO_FILE*, align 8 +@.str = private constant [8 x i8] c"crash!\0A\00", align 1 + +@fwrite = alias i64 (i8*, i64, i64, %struct._IO_FILE*), i64 (i8*, i64, i64, %struct._IO_FILE*)* @__fwrite_alias + +define i64 @__fwrite_alias(i8* %ptr, i64 %size, i64 %n, %struct._IO_FILE* %s) { +entry: + %ptr.addr = alloca i8*, align 8 + %size.addr = alloca i64, align 8 + %n.addr = alloca i64, align 8 + %s.addr = alloca %struct._IO_FILE*, align 8 + store i8* %ptr, i8** %ptr.addr, align 8 + store i64 %size, i64* %size.addr, align 8 + store i64 %n, i64* %n.addr, align 8 + store %struct._IO_FILE* %s, %struct._IO_FILE** %s.addr, align 8 + ret i64 0 +} + +define void @foo() { +entry: + %retval = alloca i32, align 4 + store i32 0, i32* %retval, align 4 + %0 = load %struct._IO_FILE*, %struct._IO_FILE** @stderr, align 8 + %call = call i32 (%struct._IO_FILE*, i8*, ...) @fprintf(%struct._IO_FILE* %0, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0)) + ret void +} + +declare i32 @fprintf(%struct._IO_FILE*, i8*, ...) |
