PPC/s390: [Liftoff] Implement i64 shift with immediate

Port 42e8c231

Original Commit Message:

    Especially on ia32 and x64, shifts with immediate generate much shorter
    and more efficient code.

R=clemensb@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: Iab474cdf6de91820e7f55ddd9a386efa03f03b6f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899423Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#64786}

src/wasm/baseline/ppc/liftoff-assembler-ppc.h

@@ -243,6 +243,10 @@ void LiftoffAssembler::FillStackSlotsWithZero(uint32_t index, uint32_t count) {
   void LiftoffAssembler::emit_##name(LiftoffRegister dst, LiftoffRegister src, \
                                      Register amount) {                        \
     bailout(kUnsupportedArchitecture, "i64 shiftop: " #name);                  \
+  }                                                                            \
+  void LiftoffAssembler::emit_##name(LiftoffRegister dst, LiftoffRegister src, \
+                                     int32_t amount) {                         \
+    bailout(kUnsupportedArchitecture, "i64 shiftop: " #name);                  \
   }
 
 UNIMPLEMENTED_I32_BINOP_I(i32_add)
@@ -368,11 +372,6 @@ bool LiftoffAssembler::emit_i64_remu(LiftoffRegister dst, LiftoffRegister lhs,
   return true;
 }
 
-void LiftoffAssembler::emit_i64_shr(LiftoffRegister dst, LiftoffRegister lhs,
-                                    int amount) {
-  bailout(kUnsupportedArchitecture, "i64_shr");
-}
-
 void LiftoffAssembler::emit_i64_clz(LiftoffRegister dst, LiftoffRegister src) {
   bailout(kUnsupportedArchitecture, "i64_clz");
 }

src/wasm/baseline/s390/liftoff-assembler-s390.h

@@ -242,6 +242,10 @@ void LiftoffAssembler::FillStackSlotsWithZero(uint32_t index, uint32_t count) {
   void LiftoffAssembler::emit_##name(LiftoffRegister dst, LiftoffRegister src, \
                                      Register amount) {                        \
     bailout(kUnsupportedArchitecture, "i64 shiftop: " #name);                  \
+  }                                                                            \
+  void LiftoffAssembler::emit_##name(LiftoffRegister dst, LiftoffRegister src, \
+                                     int32_t amount) {                         \
+    bailout(kUnsupportedArchitecture, "i64 shiftop: " #name);                  \
   }
 
 UNIMPLEMENTED_I32_BINOP_I(i32_add)
@@ -367,11 +371,6 @@ bool LiftoffAssembler::emit_i64_remu(LiftoffRegister dst, LiftoffRegister lhs,
   return true;
 }
 
-void LiftoffAssembler::emit_i64_shr(LiftoffRegister dst, LiftoffRegister lhs,
-                                    int amount) {
-  bailout(kUnsupportedArchitecture, "i64_shr");
-}
-
 void LiftoffAssembler::emit_i64_clz(LiftoffRegister dst, LiftoffRegister src) {
   bailout(kUnsupportedArchitecture, "i64_clz");
 }