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| author | Evan Cheng <evan.cheng@apple.com> | 2009-02-12 10:32:17 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-02-12 10:32:17 +0000 |
| commit | 8679119f4b686d141462bf6d18f4ae0eb0bd0841 (patch) | |
| tree | 6287723ba54427eca5dc73f99cbcbb93a112f1da /test/CodeGen/X86/2009-02-12-SpillerBug.ll | |
| parent | f2b14715d11e52adbb17a5860d1ce42f82f85a0c (diff) | |
| download | llvm-8679119f4b686d141462bf6d18f4ae0eb0bd0841.tar.gz llvm-8679119f4b686d141462bf6d18f4ae0eb0bd0841.tar.bz2 llvm-8679119f4b686d141462bf6d18f4ae0eb0bd0841.tar.xz | |
It's (currently) not safe to keep certain physical registers live across basic blocks, e.g. x86 fp stack registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64374 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2009-02-12-SpillerBug.ll')
| -rw-r--r-- | test/CodeGen/X86/2009-02-12-SpillerBug.ll | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2009-02-12-SpillerBug.ll b/test/CodeGen/X86/2009-02-12-SpillerBug.ll new file mode 100644 index 0000000000..49f3ef6005 --- /dev/null +++ b/test/CodeGen/X86/2009-02-12-SpillerBug.ll @@ -0,0 +1,28 @@ +; RUN: llvm-as < %s | llc -march=x86 -mtriple=i386-apple-darwin8 + +define hidden void @__mulxc3({ x86_fp80, x86_fp80 }* noalias nocapture sret %agg.result, x86_fp80 %a, x86_fp80 %b, x86_fp80 %c, x86_fp80 %d) nounwind { +entry: + %0 = mul x86_fp80 %b, %d ; <x86_fp80> [#uses=1] + %1 = sub x86_fp80 0xK00000000000000000000, %0 ; <x86_fp80> [#uses=1] + %2 = add x86_fp80 0xK00000000000000000000, 0xK00000000000000000000 ; <x86_fp80> [#uses=1] + %3 = fcmp uno x86_fp80 %1, 0xK00000000000000000000 ; <i1> [#uses=1] + %4 = fcmp uno x86_fp80 %2, 0xK00000000000000000000 ; <i1> [#uses=1] + %or.cond = and i1 %3, %4 ; <i1> [#uses=1] + br i1 %or.cond, label %bb47, label %bb71 + +bb47: ; preds = %entry + %5 = fcmp uno x86_fp80 %a, 0xK00000000000000000000 ; <i1> [#uses=1] + br i1 %5, label %bb60, label %bb62 + +bb60: ; preds = %bb47 + %6 = tail call x86_fp80 @copysignl(x86_fp80 0xK00000000000000000000, x86_fp80 %a) nounwind readnone ; <x86_fp80> [#uses=0] + br label %bb62 + +bb62: ; preds = %bb60, %bb47 + unreachable + +bb71: ; preds = %entry + ret void +} + +declare x86_fp80 @copysignl(x86_fp80, x86_fp80) nounwind readnone |