[llvm] [GlobalIsel] [Utility] [NFC] Added isConstantOrConstantSplatVectorFP to handle float constants. (PR #120935)

[Matt Arsenault via llvm-commits]

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@@ -408,4 +417,72 @@ TEST_F(AArch64GISelMITest, ConstFalseTest) {
     }
   }
 }
+
+TEST_F(AMDGPUGISelMITest, isConstantOrConstantSplatVectorFP) {
+  StringRef MIRString =
+      "  %cst0:_(s32) = G_FCONSTANT float 2.000000e+00\n"
+      "  %cst1:_(s32) = G_FCONSTANT float 0.0\n"
+      "  %cst2:_(s64) = G_FCONSTANT double 3.000000e-02\n"
+      "  %cst3:_(s32) = G_CONSTANT i32 2\n"
+      "  %cst4:_(<2 x s32>) = G_BUILD_VECTOR %cst0(s32), %cst0(s32)\n"
+      "  %cst5:_(<2 x s32>) = G_BUILD_VECTOR %cst1(s32), %cst0(s32)\n"
+      "  %cst6:_(<2 x s64>) = G_BUILD_VECTOR %cst2(s64), %cst2(s64)\n"
+      "  %cst7:_(<2 x s32>) = G_BUILD_VECTOR %cst3(s32), %cst3:_(s32)\n"
+      "  %cst8:_(<4 x s32>) = G_CONCAT_VECTORS %cst4:_(<2 x s32>), %cst4:_(<2 "
+      "x s32>)\n"
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arsenm wrote:

Test the behavior with G_IMPLICIT_DEF element 

https://github.com/llvm/llvm-project/pull/120935