X86TTI: Add accurate costs for itofp operations, based on the actual instruction counts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178459 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 79 insertions, 5 deletions

diff --git a/test/Analysis/CostModel/X86/cast.ll b/test/Analysis/CostModel/X86/cast.ll
index c8d0f6f..b69b3bf 100644
--- a/test/Analysis/CostModel/X86/cast.ll
+++ b/test/Analysis/CostModel/X86/cast.ll
@@ -77,3 +77,78 @@ define i32 @masks4(<4 x i1> %in) {
   ret i32 undef
 }
 
+define void @sitofp4(<4 x i1> %a, <4 x i8> %b, <4 x i16> %c, <4 x i32> %d) {
+  ; CHECK: cost of 3 {{.*}} sitofp
+  %A1 = sitofp <4 x i1> %a to <4 x float>
+  ; CHECK: cost of 3 {{.*}} sitofp
+  %A2 = sitofp <4 x i1> %a to <4 x double>
+
+  ; CHECK: cost of 3 {{.*}} sitofp
+  %B1 = sitofp <4 x i8> %b to <4 x float>
+  ; CHECK: cost of 3 {{.*}} sitofp
+  %B2 = sitofp <4 x i8> %b to <4 x double>
+
+  ; CHECK: cost of 3 {{.*}} sitofp
+  %C1 = sitofp <4 x i16> %c to <4 x float>
+  ; CHECK: cost of 3 {{.*}} sitofp
+  %C2 = sitofp <4 x i16> %c to <4 x double>
+
+  ; CHECK: cost of 1 {{.*}} sitofp
+  %D1 = sitofp <4 x i32> %d to <4 x float>
+  ; CHECK: cost of 1 {{.*}} sitofp
+  %D2 = sitofp <4 x i32> %d to <4 x double>
+  ret void
+}
+
+define void @sitofp8(<8 x i1> %a, <8 x i8> %b, <8 x i16> %c, <8 x i32> %d) {
+  ; CHECK: cost of 8 {{.*}} sitofp
+  %A1 = sitofp <8 x i1> %a to <8 x float>
+
+  ; CHECK: cost of 8 {{.*}} sitofp
+  %B1 = sitofp <8 x i8> %b to <8 x float>
+
+  ; CHECK: cost of 5 {{.*}} sitofp
+  %C1 = sitofp <8 x i16> %c to <8 x float>
+
+  ; CHECK: cost of 1 {{.*}} sitofp
+  %D1 = sitofp <8 x i32> %d to <8 x float>
+  ret void
+}
+
+define void @uitofp4(<4 x i1> %a, <4 x i8> %b, <4 x i16> %c, <4 x i32> %d) {
+  ; CHECK: cost of 7 {{.*}} uitofp
+  %A1 = uitofp <4 x i1> %a to <4 x float>
+  ; CHECK: cost of 7 {{.*}} uitofp
+  %A2 = uitofp <4 x i1> %a to <4 x double>
+
+  ; CHECK: cost of 2 {{.*}} uitofp
+  %B1 = uitofp <4 x i8> %b to <4 x float>
+  ; CHECK: cost of 2 {{.*}} uitofp
+  %B2 = uitofp <4 x i8> %b to <4 x double>
+
+  ; CHECK: cost of 2 {{.*}} uitofp
+  %C1 = uitofp <4 x i16> %c to <4 x float>
+  ; CHECK: cost of 2 {{.*}} uitofp
+  %C2 = uitofp <4 x i16> %c to <4 x double>
+
+  ; CHECK: cost of 6 {{.*}} uitofp
+  %D1 = uitofp <4 x i32> %d to <4 x float>
+  ; CHECK: cost of 6 {{.*}} uitofp
+  %D2 = uitofp <4 x i32> %d to <4 x double>
+  ret void
+}
+
+define void @uitofp8(<8 x i1> %a, <8 x i8> %b, <8 x i16> %c, <8 x i32> %d) {
+  ; CHECK: cost of 6 {{.*}} uitofp
+  %A1 = uitofp <8 x i1> %a to <8 x float>
+
+  ; CHECK: cost of 5 {{.*}} uitofp
+  %B1 = uitofp <8 x i8> %b to <8 x float>
+
+  ; CHECK: cost of 5 {{.*}} uitofp
+  %C1 = uitofp <8 x i16> %c to <8 x float>
+
+  ; CHECK: cost of 9 {{.*}} uitofp
+  %D1 = uitofp <8 x i32> %d to <8 x float>
+  ret void
+}
diff --git a/test/Transforms/LoopVectorize/X86/conversion-cost.ll b/test/Transforms/LoopVectorize/X86/conversion-cost.ll
index 23d9233..760d28d 100644
--- a/test/Transforms/LoopVectorize/X86/conversion-cost.ll
+++ b/test/Transforms/LoopVectorize/X86/conversion-cost.ll
@@ -33,11 +33,10 @@ define i32 @conversion_cost2(i32 %n, i8* nocapture %A, float* nocapture %B) noun
 
 .lr.ph:                                           ; preds = %0, %.lr.ph
   %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 9, %0 ]
-  %2 = add nsw i64 %indvars.iv, 3
-  %3 = trunc i64 %2 to i32
-  %4 = sitofp i32 %3 to float
-  %5 = getelementptr inbounds float* %B, i64 %indvars.iv
-  store float %4, float* %5, align 4
+  %add = add nsw i64 %indvars.iv, 3
+  %tofp = sitofp i64 %add to float
+  %gep = getelementptr inbounds float* %B, i64 %indvars.iv
+  store float %tofp, float* %gep, align 4
   %indvars.iv.next = add i64 %indvars.iv, 1
   %lftr.wideiv = trunc i64 %indvars.iv.next to i32
   %exitcond = icmp eq i32 %lftr.wideiv, %n