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| author | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2016-03-24 20:20:07 +0000 |
|---|---|---|
| committer | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2016-03-24 20:20:07 +0000 |
| commit | c9d4caa32c02c8bfa29c1e5af610c28f7592df5b (patch) | |
| tree | 1cc1aee57e5b6e51cf1a7f870b10d087d4f26d55 /llvm/test/CodeGen/Hexagon/runtime-stkchk.ll | |
| parent | 3b0290570b031a579b17e5cfad0e381576779489 (diff) | |
| download | bcm5719-llvm-c9d4caa32c02c8bfa29c1e5af610c28f7592df5b.tar.gz bcm5719-llvm-c9d4caa32c02c8bfa29c1e5af610c28f7592df5b.zip | |
[Hexagon] Add support for run-time stack overflow checking
Patch by Sundeep Kushwaha.
llvm-svn: 264328
Diffstat (limited to 'llvm/test/CodeGen/Hexagon/runtime-stkchk.ll')
| -rw-r--r-- | llvm/test/CodeGen/Hexagon/runtime-stkchk.ll | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Hexagon/runtime-stkchk.ll b/llvm/test/CodeGen/Hexagon/runtime-stkchk.ll new file mode 100644 index 00000000000..a4e8f117679 --- /dev/null +++ b/llvm/test/CodeGen/Hexagon/runtime-stkchk.ll @@ -0,0 +1,44 @@ +; RUN: llc -march=hexagon -mcpu=hexagonv55 -enable-stackovf-sanitizer < %s | FileCheck %s + +; CHECK-LABEL: foo_1 +; CHECK: __runtime_stack_check +define i32 @foo_1(i32 %n) #0 { +entry: + %local = alloca [1024 x i32], align 8 + %0 = bitcast [1024 x i32]* %local to i8* + call void @llvm.lifetime.start(i64 4096, i8* %0) #1 + %arraydecay = getelementptr inbounds [1024 x i32], [1024 x i32]* %local, i32 0, i32 0 + call void @baz_1(i32* %arraydecay) #3 + %arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* %local, i32 0, i32 %n + %1 = load i32, i32* %arrayidx, align 4 + call void @llvm.lifetime.end(i64 4096, i8* %0) #1 + ret i32 %1 +} + +; CHECK-LABEL: foo_2 +; CHECK: __save_r16_through_r19_stkchk +define i32 @foo_2(i32 %n, i32* %y) #0 { +entry: + %local = alloca [2048 x i32], align 8 + %0 = bitcast [2048 x i32]* %local to i8* + call void @llvm.lifetime.start(i64 8192, i8* %0) #1 + %arraydecay = getelementptr inbounds [2048 x i32], [2048 x i32]* %local, i32 0, i32 0 + call void @baz_2(i32* %y, i32* %arraydecay) #3 + %1 = load i32, i32* %y, align 4 + %add = add nsw i32 %n, %1 + %arrayidx = getelementptr inbounds [2048 x i32], [2048 x i32]* %local, i32 0, i32 %add + %2 = load i32, i32* %arrayidx, align 4 + call void @llvm.lifetime.end(i64 8192, i8* %0) #1 + ret i32 %2 +} + +declare void @baz_1(i32*) #2 +declare void @baz_2(i32*, i32*) #2 +declare void @llvm.lifetime.start(i64, i8* nocapture) #1 +declare void @llvm.lifetime.end(i64, i8* nocapture) #1 + +attributes #0 = { nounwind optsize "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } +attributes #1 = { nounwind } +attributes #2 = { optsize "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } +attributes #3 = { optsize } + |
