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| author | Dan Gohman <dan433584@gmail.com> | 2019-04-29 21:09:44 +0000 |
|---|---|---|
| committer | Dan Gohman <dan433584@gmail.com> | 2019-04-29 21:09:44 +0000 |
| commit | 8306cb5702b3f3b74cafafd95dda9122e456976f (patch) | |
| tree | a1f56a2deff25d94732892cede6d161a2861e1e9 /llvm/test/CodeGen/WebAssembly | |
| parent | 728e139700889dca8378fd02cd72b6e826ca6362 (diff) | |
| download | bcm5719-llvm-8306cb5702b3f3b74cafafd95dda9122e456976f.tar.gz bcm5719-llvm-8306cb5702b3f3b74cafafd95dda9122e456976f.zip | |
[WebAssembly] Define the signature for __stack_chk_fail
The WebAssembly backend needs to know the signatures of all runtime
libcall functions. This adds the signature for __stack_chk_fail which was
previously missing.
Also, make the error message for a missing libcall include the name of
the function.
Differential Revision: https://reviews.llvm.org/D59521
Reviewed By: sbc100
llvm-svn: 359505
Diffstat (limited to 'llvm/test/CodeGen/WebAssembly')
| -rw-r--r-- | llvm/test/CodeGen/WebAssembly/stack-protector.ll | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/WebAssembly/stack-protector.ll b/llvm/test/CodeGen/WebAssembly/stack-protector.ll new file mode 100644 index 00000000000..ef0bf94fcec --- /dev/null +++ b/llvm/test/CodeGen/WebAssembly/stack-protector.ll @@ -0,0 +1,30 @@ +; RUN: llc -verify-machineinstrs -mtriple=wasm32-unknown-unknown < %s | FileCheck -check-prefix=WASM32 %s + +; WASM32: i32.load 28 +; WASM32-NEXT: i32.sub +; WASM32-NEXT: br_if 0 + +; WASM32: __stack_chk_fail + +@"\01LC" = internal constant [11 x i8] c"buf == %s\0A\00" ; <[11 x i8]*> [#uses=1] + +define void @test(i8* %a) nounwind ssp { +entry: + %a_addr = alloca i8* ; <i8**> [#uses=2] + %buf = alloca [8 x i8] ; <[8 x i8]*> [#uses=2] + %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] + store i8* %a, i8** %a_addr + %buf1 = bitcast [8 x i8]* %buf to i8* ; <i8*> [#uses=1] + %0 = load i8*, i8** %a_addr, align 4 ; <i8*> [#uses=1] + %1 = call i8* @strcpy(i8* %buf1, i8* %0) nounwind ; <i8*> [#uses=0] + %buf2 = bitcast [8 x i8]* %buf to i8* ; <i8*> [#uses=1] + %2 = call i32 (i8*, ...) @printf(i8* getelementptr ([11 x i8], [11 x i8]* @"\01LC", i32 0, i32 0), i8* %buf2) nounwind ; <i32> [#uses=0] + br label %return + +return: ; preds = %entry + ret void +} + +declare i8* @strcpy(i8*, i8*) nounwind + +declare i32 @printf(i8*, ...) nounwind |
