- 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

1 files changed, 7 insertions, 0 deletions

diff --git a/test/CodeGen/X86/ins_subreg_coalesce-2.ll b/test/CodeGen/X86/ins_subreg_coalesce-2.ll
new file mode 100644
index 0000000000..5c0b0d3d3e
--- /dev/null
+++ b/test/CodeGen/X86/ins_subreg_coalesce-2.ll
@@ -0,0 +1,7 @@
+; RUN: llvm-as < %s | llc -march=x86-64 | not grep movw
+
+define i16 @test5(i16 %f12) nounwind {
+	%f11 = shl i16 %f12, 2		; <i16> [#uses=1]
+	%tmp7.25 = ashr i16 %f11, 8		; <i16> [#uses=1]
+	ret i16 %tmp7.25
+}