[ARM] preserve test intent by removing undef

We need to clean up the DAG floating-point undef logic. This process is similar to how we handled integer undef logic in D43141. And as we did there, I'm trying to reduce the patch by changing tests that would probably become meaningless once we correct FP undef folding. llvm-svn: 332537
llvm · May 16, 2018 · 066309f · 066309f
1 parent 820433f
commit 066309f
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/llvm/test/CodeGen/ARM/spill-q.ll b/llvm/test/CodeGen/ARM/spill-q.ll
@@ -53,17 +53,17 @@ bb4:                                              ; preds = %bb193, %entry
   %4 = fadd <4 x float> %3, %part0.0.0261         ; <<4 x float>> [#uses=1]
   %5 = shufflevector <4 x float> %3, <4 x float> undef, <2 x i32> <i32 2, i32 3> ; <<2 x float>> [#uses=1]
   %6 = shufflevector <2 x float> %5, <2 x float> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1> ; <<4 x float>> [#uses=1]
-  %7 = fmul <4 x float> %1, undef                 ; <<4 x float>> [#uses=1]
+  %7 = fmul <4 x float> %1, %1
   %8 = fadd <4 x float> %7, <float 5.000000e-01, float 5.000000e-01, float 5.000000e-01, float 5.000000e-01> ; <<4 x float>> [#uses=1]
   %9 = fptosi <4 x float> %8 to <4 x i32>         ; <<4 x i32>> [#uses=1]
   %10 = sitofp <4 x i32> %9 to <4 x float>        ; <<4 x float>> [#uses=1]
   %11 = fmul <4 x float> %10, %2                  ; <<4 x float>> [#uses=1]
-  %12 = fmul <4 x float> undef, %6                ; <<4 x float>> [#uses=1]
+  %12 = fmul <4 x float> %6, %6
   %13 = fmul <4 x float> %11, %4                  ; <<4 x float>> [#uses=1]
   %14 = fsub <4 x float> %12, %13                 ; <<4 x float>> [#uses=1]
-  %15 = fsub <4 x float> %14, undef               ; <<4 x float>> [#uses=1]
+  %15 = fsub <4 x float> %14, %14
   %16 = fmul <4 x float> %15, <float 2.000000e+00, float 2.000000e+00, float 2.000000e+00, float 2.000000e+00> ; <<4 x float>> [#uses=1]
-  %17 = fadd <4 x float> %16, undef               ; <<4 x float>> [#uses=1]
+  %17 = fadd <4 x float> %16, %16
   %18 = fmul <4 x float> %17, %val173             ; <<4 x float>> [#uses=1]
   %19 = shufflevector <4 x float> %18, <4 x float> undef, <2 x i32> <i32 2, i32 3> ; <<2 x float>> [#uses=1]
   %20 = shufflevector <2 x float> %19, <2 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>> [#uses=1]