[llvm-commits] [llvm] r55840 - in /llvm/trunk: lib/Target/X86/X86CallingConv.td test/CodeGen/X86/constant-pool-remat-0.ll test/CodeGen/X86/fastcc-2.ll test/CodeGen/X86/fastcc.ll

[Evan Cheng]

Author: evancheng
Date: Fri Sep  5 12:24:07 2008
New Revision: 55840

URL: http://llvm.org/viewvc/llvm-project?rev=55840&view=rev
Log:
If SSE2 is available, x86 should pass first 3 f32/f64 arguments in XMM registers for fastcc calls.

Added:
    llvm/trunk/test/CodeGen/X86/fastcc-2.ll
Modified:
    llvm/trunk/lib/Target/X86/X86CallingConv.td
    llvm/trunk/test/CodeGen/X86/constant-pool-remat-0.ll
    llvm/trunk/test/CodeGen/X86/fastcc.ll

Modified: llvm/trunk/lib/Target/X86/X86CallingConv.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86CallingConv.td?rev=55840&r1=55839&r2=55840&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86CallingConv.td (original)
+++ llvm/trunk/lib/Target/X86/X86CallingConv.td Fri Sep  5 12:24:07 2008
@@ -352,6 +352,12 @@
   // The first 2 integer arguments are passed in ECX/EDX
   CCIfType<[i32], CCAssignToReg<[ECX, EDX]>>,
 
+  // The first 3 float or double arguments, if the call is not a vararg
+  // call and if SSE2 is available, are passed in SSE registers.
+  CCIfNotVarArg<CCIfType<[f32,f64],
+                CCIfSubtarget<"hasSSE2()",
+                CCAssignToReg<[XMM0,XMM1,XMM2]>>>>,
+
   // Doubles get 8-byte slots that are 8-byte aligned.
   CCIfType<[f64], CCAssignToStack<8, 8>>,
 

Modified: llvm/trunk/test/CodeGen/X86/constant-pool-remat-0.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/constant-pool-remat-0.ll?rev=55840&r1=55839&r2=55840&view=diff

==============================================================================
--- llvm/trunk/test/CodeGen/X86/constant-pool-remat-0.ll (original)
+++ llvm/trunk/test/CodeGen/X86/constant-pool-remat-0.ll Fri Sep  5 12:24:07 2008
@@ -1,13 +1,13 @@
 ; RUN: llvm-as < %s | llc -march=x86-64 | grep LCPI | count 3
 ; RUN: llvm-as < %s | llc -march=x86-64 -stats  -info-output-file - | grep asm-printer | grep 6
 ; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep LCPI | count 3
-; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 -stats  -info-output-file - | grep asm-printer | grep 8
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 -stats  -info-output-file - | grep asm-printer | grep 12
 
-declare fastcc float @qux(float %y)
+declare float @qux(float %y)
 
-define fastcc float @array(float %a) nounwind {
+define float @array(float %a) nounwind {
   %n = mul float %a, 9.0
-  %m = call fastcc float @qux(float %n)
+  %m = call float @qux(float %n)
   %o = mul float %m, 9.0
   ret float %o
 }

Added: llvm/trunk/test/CodeGen/X86/fastcc-2.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/fastcc-2.ll?rev=55840&view=auto

==============================================================================
--- llvm/trunk/test/CodeGen/X86/fastcc-2.ll (added)
+++ llvm/trunk/test/CodeGen/X86/fastcc-2.ll Fri Sep  5 12:24:07 2008
@@ -0,0 +1,10 @@
+; RUN: llvm-as < %s | llc -mtriple=i686-apple-darwin -mattr=+sse2 | grep movsd
+; RUN: llvm-as < %s | llc -mtriple=i686-apple-darwin -mattr=+sse2 | grep mov | count 1
+
+define i32 @foo() nounwind {
+entry:
+	tail call fastcc void @bar( double 1.000000e+00 ) nounwind
+	ret i32 0
+}
+
+declare fastcc void @bar(double)

Modified: llvm/trunk/test/CodeGen/X86/fastcc.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/fastcc.ll?rev=55840&r1=55839&r2=55840&view=diff

==============================================================================
--- llvm/trunk/test/CodeGen/X86/fastcc.ll (original)
+++ llvm/trunk/test/CodeGen/X86/fastcc.ll Fri Sep  5 12:24:07 2008
@@ -1,5 +1,5 @@
 ; RUN: llvm-as < %s | llc -mtriple=i686-apple-darwin | grep mov | grep ecx | grep 0
-; RUN: llvm-as < %s | llc -mtriple=i686-apple-darwin | grep mov | grep xmm0 | grep 16
+; RUN: llvm-as < %s | llc -mtriple=i686-apple-darwin | grep mov | grep xmm0 | grep 8
 
 @d = external global double		; <double*> [#uses=1]
 @c = external global double		; <double*> [#uses=1]