[llvm-commits] CVS: llvm/lib/Target/X86/README.txt

[Evan Cheng]

Changes in directory llvm/lib/Target/X86:

README.txt updated: 1.91 -> 1.92
---
Log message:

Correct comments

---
Diffs of the changes:  (+6 -6)

 README.txt |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)


Index: llvm/lib/Target/X86/README.txt
diff -u llvm/lib/Target/X86/README.txt:1.91 llvm/lib/Target/X86/README.txt:1.92
--- llvm/lib/Target/X86/README.txt:1.91	Mon Apr 17 20:22:57 2006
+++ llvm/lib/Target/X86/README.txt	Mon Apr 17 22:45:01 2006
@@ -982,17 +982,17 @@
 	jne LBB_main_4	# cond_true44
 
 There are two problems. 1) No need to two loop induction variables. We can
-compare against 262144 * 16. 2) Poor register allocation decisions. We should
+compare against 262144 * 16. 2) Known register coalescer issue. We should
 be able eliminate one of the movaps:
 
-	addps %xmm1, %xmm2
-	subps %xmm3, %xmm2
+	addps %xmm2, %xmm1    <=== Commute!
+	subps %xmm3, %xmm1
 	movaps (%ecx), %xmm4
-	movaps %xmm2, %xmm2   <=== Eliminate!
-	addps %xmm4, %xmm2
+	movaps %xmm1, %xmm1   <=== Eliminate!
+	addps %xmm4, %xmm1
 	addl $16, %ecx
 	incl %edx
 	cmpl $262144, %edx
-	movaps %xmm3, %xmm1
+	movaps %xmm3, %xmm2
 	movaps %xmm4, %xmm3
 	jne LBB_main_4	# cond_true44