diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2009-02-08 11:04:35 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-02-08 11:04:35 +0000 |
| commit | 0a1fcce09230e9b4bd30a8f07447aa075dce7470 (patch) | |
| tree | 4c231f234610070704963a861fb538ebd859d98b /test/CodeGen/X86/2009-02-08-CoalescerBug.ll | |
| parent | 86fb9fdb2000213d3cd5a082e8501cb8fe974a14 (diff) | |
| download | llvm-0a1fcce09230e9b4bd30a8f07447aa075dce7470.tar.gz llvm-0a1fcce09230e9b4bd30a8f07447aa075dce7470.tar.bz2 llvm-0a1fcce09230e9b4bd30a8f07447aa075dce7470.tar.xz | |
Fix PR3486. Fix a bug in code that manually patch physical register live interval after its sub-register is coalesced with a virtual register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64082 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2009-02-08-CoalescerBug.ll')
| -rw-r--r-- | test/CodeGen/X86/2009-02-08-CoalescerBug.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2009-02-08-CoalescerBug.ll b/test/CodeGen/X86/2009-02-08-CoalescerBug.ll new file mode 100644 index 0000000000..cd30c1e7e4 --- /dev/null +++ b/test/CodeGen/X86/2009-02-08-CoalescerBug.ll @@ -0,0 +1,22 @@ +; RUN: llvm-as < %s | llc -march=x86 +; PR3486 + +define i32 @foo(i8 signext %p_26) nounwind { +entry: + %0 = icmp eq i8 %p_26, 0 ; <i1> [#uses=2] + %or.cond = or i1 false, %0 ; <i1> [#uses=2] + %iftmp.1.0 = zext i1 %or.cond to i16 ; <i16> [#uses=1] + br i1 %0, label %bb.i, label %bar.exit + +bb.i: ; preds = %entry + %1 = zext i1 %or.cond to i32 ; <i32> [#uses=1] + %2 = sdiv i32 %1, 0 ; <i32> [#uses=1] + %3 = trunc i32 %2 to i16 ; <i16> [#uses=1] + br label %bar.exit + +bar.exit: ; preds = %bb.i, %entry + %4 = phi i16 [ %3, %bb.i ], [ %iftmp.1.0, %entry ] ; <i16> [#uses=1] + %5 = trunc i16 %4 to i8 ; <i8> [#uses=1] + %6 = sext i8 %5 to i32 ; <i32> [#uses=1] + ret i32 %6 +} |