Update live-in lists when splitting critical edges.

Fixes PR10814. Patch by Jan Sjödin!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141960 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/uint64-to-float.ll b/test/CodeGen/X86/uint64-to-float.ll
index d9f753c..1dbbdcf 100644
--- a/test/CodeGen/X86/uint64-to-float.ll
+++ b/test/CodeGen/X86/uint64-to-float.ll
@@ -6,12 +6,37 @@
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 target triple = "x86_64-apple-darwin10.0.0"
 
+; FIXME: This test could generate this code:
+;
+; ## BB#0:                                ## %entry
+; 	testq	%rdi, %rdi
+; 	jns	LBB0_2
+; ## BB#1:
+; 	movq	%rdi, %rax
+; 	shrq	%rax
+; 	andq	$1, %rdi
+; 	orq	%rax, %rdi
+; 	cvtsi2ssq	%rdi, %xmm0
+; 	addss	%xmm0, %xmm0
+; 	ret
+; LBB0_2:                                 ## %entry
+; 	cvtsi2ssq	%rdi, %xmm0
+; 	ret
+;
+; The blocks come from lowering:
+;
+;   %vreg7<def> = CMOV_FR32 %vreg6<kill>, %vreg5<kill>, 15, %EFLAGS<imp-use>; FR32:%vreg7,%vreg6,%vreg5
+;
+; If the instruction had an EFLAGS<kill> flag, it wouldn't need to mark EFLAGS
+; as live-in on the new blocks, and machine sinking would be able to sink
+; everything below the test.
+
+; CHECK: shrq
+; CHECK: andq
+; CHECK-NEXT: orq
 ; CHECK: testq %rdi, %rdi
 ; CHECK-NEXT: jns LBB0_2
-; CHECK: shrq
-; CHECK-NEXT: andq
-; CHECK-NEXT: orq
-; CHECK-NEXT: cvtsi2ss
+; CHECK: cvtsi2ss
 ; CHECK: LBB0_2
 ; CHECK-NEXT: cvtsi2ss
 define float @test(i64 %a) {