[NFC][test] Adding fastcc test case for promoted 16-bit integer bitcasts.

The following: https://reviews.llvm.org/D82552

fixed an assert in the SelectionDag ISel legalizer for some CCs on armv7.

I noticed that this fix also fixes the assert when using fastcc, so I am
adding a fastcc regression test here.

Differential Revision: https://reviews.llvm.org/D82443

diff --git a/llvm/test/CodeGen/ARM/arm-half-promote.ll b/llvm/test/CodeGen/ARM/arm-half-promote.ll
index 1d81273..f3c9a9e 100644 (file)
--- a/llvm/test/CodeGen/ARM/arm-half-promote.ll
+++ b/llvm/test/CodeGen/ARM/arm-half-promote.ll
@@ -51,3 +51,31 @@ define swiftcc { <8 x half>, <8 x half> } @f2() {
 ; CHECK-NEXT: bx      lr
   ret { <8 x half>, <8 x half> } zeroinitializer
 }
+
+define fastcc { <8 x half>, <8 x half> } @f3() {
+; CHECK-LABEL: _f3
+; CHECK: vpush   {d8}
+; CHECK-NEXT: vmov.f64        d8, #5.000000e-01
+; CHECK-NEXT: vmov.i32        d8, #0x0
+; CHECK-NEXT: vmov.i32        d0, #0x0
+; CHECK-NEXT: vmov.i32        d1, #0x0
+; CHECK-NEXT: vmov.i32        d2, #0x0
+; CHECK-NEXT: vmov.i32        d3, #0x0
+; CHECK-NEXT: vmov.i32        d4, #0x0
+; CHECK-NEXT: vmov.i32        d5, #0x0
+; CHECK-NEXT: vmov.i32        d6, #0x0
+; CHECK-NEXT: vmov.i32        d7, #0x0
+; CHECK-NEXT: vmov.f32        s1, s16
+; CHECK-NEXT: vmov.f32        s3, s16
+; CHECK-NEXT: vmov.f32        s5, s16
+; CHECK-NEXT: vmov.f32        s7, s16
+; CHECK-NEXT: vmov.f32        s9, s16
+; CHECK-NEXT: vmov.f32        s11, s16
+; CHECK-NEXT: vmov.f32        s13, s16
+; CHECK-NEXT: vmov.f32        s15, s16
+; CHECK-NEXT: vpop    {d8}
+; CHECK-NEXT: bx      lr
+
+  ret { <8 x half>, <8 x half> } zeroinitializer
+}
+