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| author | Evan Cheng <evan.cheng@apple.com> | 2008-03-11 07:19:34 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-03-11 07:19:34 +0000 |
| commit | e88a625ecd110448a5b8c74f2396fea210fc5bdf (patch) | |
| tree | 398381579f4c290a6c56f3374d2b4737affc319c /llvm/test/CodeGen | |
| parent | 5b59e372dcb4776bd2acb4ae0c6438aead9fe7c2 (diff) | |
| download | bcm5719-llvm-e88a625ecd110448a5b8c74f2396fea210fc5bdf.tar.gz bcm5719-llvm-e88a625ecd110448a5b8c74f2396fea210fc5bdf.zip | |
When the register allocator runs out of registers, spill a physical register around the def's and use's of the interval being allocated to make it possible for the interval to target a register and spill it right away and restore a register for uses. This likely generates terrible code but is before than aborting.
llvm-svn: 48218
Diffstat (limited to 'llvm/test/CodeGen')
| -rw-r--r-- | llvm/test/CodeGen/X86/2008-03-10-RegAllocInfLoop.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/2008-03-10-RegAllocInfLoop.ll b/llvm/test/CodeGen/X86/2008-03-10-RegAllocInfLoop.ll new file mode 100644 index 00000000000..b85859205fb --- /dev/null +++ b/llvm/test/CodeGen/X86/2008-03-10-RegAllocInfLoop.ll @@ -0,0 +1,14 @@ +; RUN: llvm-as < %s | llc -mtriple=i386-pc-linux-gnu -relocation-model=pic -disable-fp-elim +; PR2134 + +declare fastcc i8* @w_addchar(i8*, i32*, i32*, i8 signext ) nounwind + +define x86_stdcallcc i32 @parse_backslash(i8** inreg %word, i32* inreg %word_length, i32* inreg %max_length) nounwind { +entry: + %tmp6 = load i8* null, align 1 ; <i8> [#uses=1] + br label %bb13 +bb13: ; preds = %entry + %tmp26 = call fastcc i8* @w_addchar( i8* null, i32* %word_length, i32* %max_length, i8 signext %tmp6 ) nounwind ; <i8*> [#uses=1] + store i8* %tmp26, i8** %word, align 4 + ret i32 0 +} |
