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| author | Evan Cheng <evan.cheng@apple.com> | 2008-04-09 20:57:25 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-04-09 20:57:25 +0000 |
| commit | 7e073baedb8232b9519dbe15ea141ff98ccfe6ae (patch) | |
| tree | 0c9ef7c93ae3eb5aac992a8dc7624009c360ab2a /test/CodeGen/X86/ins_subreg_coalesce-1.ll | |
| parent | 7d8143f0ef35fccc98a624525b4517eb790e2d14 (diff) | |
- More aggressively coalescing away copies whose source is defined by an implicit_def.
- Added insert_subreg coalescing support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49448 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/ins_subreg_coalesce-1.ll')
| -rw-r--r-- | test/CodeGen/X86/ins_subreg_coalesce-1.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGen/X86/ins_subreg_coalesce-1.ll b/test/CodeGen/X86/ins_subreg_coalesce-1.ll new file mode 100644 index 0000000000..863cda94c5 --- /dev/null +++ b/test/CodeGen/X86/ins_subreg_coalesce-1.ll @@ -0,0 +1,24 @@ +; RUN: llvm-as < %s | llc -march=x86 | grep mov | count 2 + +define fastcc i32 @sqlite3ExprResolveNames() nounwind { +entry: + br i1 false, label %UnifiedReturnBlock, label %bb4 +bb4: ; preds = %entry + br i1 false, label %bb17, label %bb22 +bb17: ; preds = %bb4 + ret i32 1 +bb22: ; preds = %bb4 + br i1 true, label %walkExprTree.exit, label %bb4.i +bb4.i: ; preds = %bb22 + ret i32 0 +walkExprTree.exit: ; preds = %bb22 + %tmp83 = load i16* null, align 4 ; <i16> [#uses=1] + %tmp84 = or i16 %tmp83, 2 ; <i16> [#uses=2] + store i16 %tmp84, i16* null, align 4 + %tmp98993 = zext i16 %tmp84 to i32 ; <i32> [#uses=1] + %tmp1004 = lshr i32 %tmp98993, 3 ; <i32> [#uses=1] + %tmp100.lobit5 = and i32 %tmp1004, 1 ; <i32> [#uses=1] + ret i32 %tmp100.lobit5 +UnifiedReturnBlock: ; preds = %entry + ret i32 0 +} |