[RISCV][GISel] Add test case for FP load/store legalization. NFC

Author: topperc

llvm/test/CodeGen/RISCV/GlobalISel/legalizer/legalize-fp-load-store.mir

@@ -0,0 +1,82 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=riscv32 -mattr=+d -run-pass=legalizer %s -o - \
+# RUN: | FileCheck %s
+# RUN: llc -mtriple=riscv64 -mattr=+d -run-pass=legalizer %s -o - \
+# RUN: | FileCheck %s
+
+---
+name:            fp_store_f32
+body:             |
+  bb.1:
+    liveins: $x10, $f10_f
+
+    ; CHECK-LABEL: name: fp_store_f32
+    ; CHECK: liveins: $x10, $f10_f
+    ; CHECK-NEXT: {{  $}}
+    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x10
+    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $f10_f
+    ; CHECK-NEXT: G_STORE [[COPY1]](s32), [[COPY]](p0) :: (store (s32))
+    ; CHECK-NEXT: PseudoRET
+    %0:_(p0) = COPY $x10
+    %1:_(s32) = COPY $f10_f
+    G_STORE %1(s32), %0(p0) :: (store (s32))
+    PseudoRET
+
+...
+---
+name:            fp_store_f64
+body:             |
+  bb.1:
+    liveins: $x10, $f10_d
+
+    ; CHECK-LABEL: name: fp_store_f64
+    ; CHECK: liveins: $x10, $f10_d
+    ; CHECK-NEXT: {{  $}}
+    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x10
+    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s64) = COPY $f10_d
+    ; CHECK-NEXT: G_STORE [[COPY1]](s64), [[COPY]](p0) :: (store (s64))
+    ; CHECK-NEXT: PseudoRET
+    %0:_(p0) = COPY $x10
+    %1:_(s64) = COPY $f10_d
+    G_STORE %1(s64), %0(p0) :: (store (s64))
+    PseudoRET
+
+...
+---
+name:            fp_load_f32
+body:             |
+  bb.1:
+    liveins: $x10, $f10_f
+
+    ; CHECK-LABEL: name: fp_load_f32
+    ; CHECK: liveins: $x10, $f10_f
+    ; CHECK-NEXT: {{  $}}
+    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x10
+    ; CHECK-NEXT: [[LOAD:%[0-9]+]]:_(s32) = G_LOAD [[COPY]](p0) :: (load (s32))
+    ; CHECK-NEXT: $f10_f = COPY [[LOAD]](s32)
+    ; CHECK-NEXT: PseudoRET implicit $f10_f
+    %0:_(p0) = COPY $x10
+    %2:_(s32) = G_LOAD %0(p0) :: (load (s32))
+    $f10_f = COPY %2(s32)
+    PseudoRET implicit $f10_f
+
+...
+---
+name:            fp_load_f64
+body:             |
+  bb.1:
+    liveins: $x10, $f10_d
+
+    ; CHECK-LABEL: name: fp_load_f64
+    ; CHECK: liveins: $x10, $f10_d
+    ; CHECK-NEXT: {{  $}}
+    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x10
+    ; CHECK-NEXT: [[LOAD:%[0-9]+]]:_(s64) = G_LOAD [[COPY]](p0) :: (load (s64))
+    ; CHECK-NEXT: $f10_d = COPY [[LOAD]](s64)
+    ; CHECK-NEXT: PseudoRET implicit $f10_d
+    %0:_(p0) = COPY $x10
+    %2:_(s64) = G_LOAD %0(p0) :: (load (s64))
+    $f10_d = COPY %2(s64)
+    PseudoRET implicit $f10_d
+
+...