[llvm-commits] [llvm] r169423 - in /llvm/trunk: lib/Target/TargetTransformImpl.cpp test/Analysis/CostModel/X86/arith.ll test/Analysis/CostModel/X86/cast.ll test/Analysis/CostModel/X86/cmp.ll test/Analysis/CostModel/X86/i32.ll test/Analysis/CostModel/X86/tiny.ll test/Analysis/CostModel/X86/vectorized-loop.ll

[Nadav Rotem]

Author: nadav
Date: Wed Dec  5 15:21:26 2012
New Revision: 169423

URL: http://llvm.org/viewvc/llvm-project?rev=169423&view=rev
Log:
Cost Model: change the default cost of control flow instructions (br / ret / ...) to zero.

Modified:
    llvm/trunk/lib/Target/TargetTransformImpl.cpp
    llvm/trunk/test/Analysis/CostModel/X86/arith.ll
    llvm/trunk/test/Analysis/CostModel/X86/cast.ll
    llvm/trunk/test/Analysis/CostModel/X86/cmp.ll
    llvm/trunk/test/Analysis/CostModel/X86/i32.ll
    llvm/trunk/test/Analysis/CostModel/X86/tiny.ll
    llvm/trunk/test/Analysis/CostModel/X86/vectorized-loop.ll

Modified: llvm/trunk/lib/Target/TargetTransformImpl.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/TargetTransformImpl.cpp?rev=169423&r1=169422&r2=169423&view=diff
==============================================================================
--- llvm/trunk/lib/Target/TargetTransformImpl.cpp (original)
+++ llvm/trunk/lib/Target/TargetTransformImpl.cpp Wed Dec  5 15:21:26 2012
@@ -283,7 +283,7 @@
  }
 
 unsigned VectorTargetTransformImpl::getCFInstrCost(unsigned Opcode) const {
-  return 1;
+  return 0;
 }
 
 unsigned VectorTargetTransformImpl::getCmpSelInstrCost(unsigned Opcode,

Modified: llvm/trunk/test/Analysis/CostModel/X86/arith.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/CostModel/X86/arith.ll?rev=169423&r1=169422&r2=169423&view=diff
==============================================================================
--- llvm/trunk/test/Analysis/CostModel/X86/arith.ll (original)
+++ llvm/trunk/test/Analysis/CostModel/X86/arith.ll Wed Dec  5 15:21:26 2012
@@ -14,7 +14,7 @@
   %D = add <4 x i64> undef, undef
   ;CHECK: cost of 8 {{.*}} add
   %E = add <8 x i64> undef, undef
-  ;CHECK: cost of 1 {{.*}} ret
+  ;CHECK: cost of 0 {{.*}} ret
   ret i32 undef
 }
 
@@ -28,7 +28,7 @@
   %C = xor <2 x i64> undef, undef
   ;CHECK: cost of 1 {{.*}} xor
   %D = xor <4 x i64> undef, undef
-  ;CHECK: cost of 1 {{.*}} ret
+  ;CHECK: cost of 0 {{.*}} ret
   ret i32 undef
 }
 

Modified: llvm/trunk/test/Analysis/CostModel/X86/cast.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/CostModel/X86/cast.ll?rev=169423&r1=169422&r2=169423&view=diff
==============================================================================
--- llvm/trunk/test/Analysis/CostModel/X86/cast.ll (original)
+++ llvm/trunk/test/Analysis/CostModel/X86/cast.ll Wed Dec  5 15:21:26 2012
@@ -28,7 +28,7 @@
   ;CHECK: cost of 0 {{.*}} trunc
   %H = trunc i32 undef to i1
 
-  ;CHECK: cost of 1 {{.*}} ret
+  ;CHECK: cost of 0 {{.*}} ret
   ret i32 undef
 }
 

Modified: llvm/trunk/test/Analysis/CostModel/X86/cmp.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/CostModel/X86/cmp.ll?rev=169423&r1=169422&r2=169423&view=diff
==============================================================================
--- llvm/trunk/test/Analysis/CostModel/X86/cmp.ll (original)
+++ llvm/trunk/test/Analysis/CostModel/X86/cmp.ll Wed Dec  5 15:21:26 2012
@@ -35,7 +35,7 @@
   ;CHECK: cost of 4 {{.*}} icmp
   %M = icmp eq <32 x i8> undef, undef
 
-  ;CHECK: cost of 1 {{.*}} ret
+  ;CHECK: cost of 0 {{.*}} ret
   ret i32 undef
 }
 

Modified: llvm/trunk/test/Analysis/CostModel/X86/i32.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/CostModel/X86/i32.ll?rev=169423&r1=169422&r2=169423&view=diff
==============================================================================
--- llvm/trunk/test/Analysis/CostModel/X86/i32.ll (original)
+++ llvm/trunk/test/Analysis/CostModel/X86/i32.ll Wed Dec  5 15:21:26 2012
@@ -2,7 +2,7 @@
 
 
 ;CHECK: cost of 2 {{.*}} add
-;CHECK: cost of 1 {{.*}} ret
+;CHECK: cost of 0 {{.*}} ret
 define i32 @no_info(i32 %arg) {
   %e = add i64 undef, undef
   ret i32 undef

Modified: llvm/trunk/test/Analysis/CostModel/X86/tiny.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/CostModel/X86/tiny.ll?rev=169423&r1=169422&r2=169423&view=diff
==============================================================================
--- llvm/trunk/test/Analysis/CostModel/X86/tiny.ll (original)
+++ llvm/trunk/test/Analysis/CostModel/X86/tiny.ll Wed Dec  5 15:21:26 2012
@@ -4,7 +4,7 @@
 target triple = "x86_64-apple-macosx10.8.0"
 
 ;CHECK: cost of 1 {{.*}} add
-;CHECK: cost of 1 {{.*}} ret
+;CHECK: cost of 0 {{.*}} ret
 define i32 @no_info(i32 %arg) {
   %e = add i32 %arg, %arg
   ret i32 %e

Modified: llvm/trunk/test/Analysis/CostModel/X86/vectorized-loop.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/CostModel/X86/vectorized-loop.ll?rev=169423&r1=169422&r2=169423&view=diff
==============================================================================
--- llvm/trunk/test/Analysis/CostModel/X86/vectorized-loop.ll (original)
+++ llvm/trunk/test/Analysis/CostModel/X86/vectorized-loop.ll Wed Dec  5 15:21:26 2012
@@ -41,7 +41,7 @@
   store <8 x i32> %11, <8 x i32>* %9, align 4
   %index.next = add i64 %index, 8
   %12 = icmp eq i64 %index.next, %end.idx.rnd.down
-  ;CHECK: cost of 1 {{.*}} br
+  ;CHECK: cost of 0 {{.*}} br
   br i1 %12, label %middle.block, label %vector.body
 
 middle.block:                                     ; preds = %vector.body, %for.body.lr.ph
@@ -65,11 +65,11 @@
   ;CHECK: cost of 0 {{.*}} trunc
   %16 = trunc i64 %indvars.iv.next to i32
   %cmp = icmp slt i32 %16, %end
-  ;CHECK: cost of 1 {{.*}} br
+  ;CHECK: cost of 0 {{.*}} br
   br i1 %cmp, label %for.body, label %for.end
 
 for.end:                                          ; preds = %middle.block, %for.body, %entry
-  ;CHECK: cost of 1 {{.*}} ret
+  ;CHECK: cost of 0 {{.*}} ret
   ret i32 undef
 }