[llvm-commits] [llvm] r47106 - in /llvm/trunk: lib/Target/X86/README-FPStack.txt test/CodeGen/X86/zero-remat.ll

[Chris Lattner]

Author: lattner
Date: Wed Feb 13 23:39:46 2008
New Revision: 47106

URL: http://llvm.org/viewvc/llvm-project?rev=47106&view=rev
Log:
This readme entry is done, testcase here: CodeGen/X86/zero-remat.ll

Modified:
    llvm/trunk/lib/Target/X86/README-FPStack.txt
    llvm/trunk/test/CodeGen/X86/zero-remat.ll

Modified: llvm/trunk/lib/Target/X86/README-FPStack.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/README-FPStack.txt?rev=47106&r1=47105&r2=47106&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/README-FPStack.txt (original)
+++ llvm/trunk/lib/Target/X86/README-FPStack.txt Wed Feb 13 23:39:46 2008
@@ -9,20 +9,6 @@
 
 //===---------------------------------------------------------------------===//
 
-On darwin/x86, we should codegen:
-
-        ret double 0.000000e+00
-
-as fld0/ret, not as:
-
-        movl $0, 4(%esp)
-        movl $0, (%esp)
-        fldl (%esp)
-	...
-        ret
-
-//===---------------------------------------------------------------------===//
-
 This should use fiadd on chips where it is profitable:
 double foo(double P, int *I) { return P+*I; }
 

Modified: llvm/trunk/test/CodeGen/X86/zero-remat.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/zero-remat.ll?rev=47106&r1=47105&r2=47106&view=diff

==============================================================================
--- llvm/trunk/test/CodeGen/X86/zero-remat.ll (original)
+++ llvm/trunk/test/CodeGen/X86/zero-remat.ll Wed Feb 13 23:39:46 2008
@@ -1,5 +1,7 @@
 ; RUN: llvm-as < %s | llc -march=x86-64 | grep xor | count 4
 ; RUN: llvm-as < %s | llc -march=x86-64 -stats -info-output-file - | grep asm-printer | grep 12
+; RUN: llvm-as < %s | llc -march=x86 | grep fldz
+; RUN: llvm-as < %s | llc -march=x86 | not grep fldl
 
 declare void @bar(double %x)
 declare void @barf(float %x)