PPC/s390: [wasm-simd][liftoff][ia32][x64] Implement pmin pmax

Port 863c2cb4

Original Commit Message:

    Implement f32x4.pmin, f32x4.pmax, f64x2.pmin, and f64x2.pmax.

    Due to the way minps/maxps/minpd/maxpd works [0], we swap lhs and rhs.
    This is similar to the way TurboFan does this [1].

    [0] "If the values being compared are both 0.0s (of either sign), the
    value in the second operand (source operand) is returned." but pmin/pmax
    wants to return the lhs (which follows the definition of std::min<T> in
    C++ STL.)

    [1]
    https://source.chromium.org/search?q=instruction-selector-ia32.cc%20VisitPmin&ss=chromium%2Fchromium%2Fsrc:v8%2F

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

Change-Id: I3c894d203dffedee579236e3aec681e6206a8e7a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2410474Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#69895}

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

@@ -627,6 +627,16 @@ void LiftoffAssembler::emit_f64x2_max(LiftoffRegister dst, LiftoffRegister lhs,
   bailout(kUnsupportedArchitecture, "emit_f64x2max");
 }
 
+void LiftoffAssembler::emit_f64x2_pmin(LiftoffRegister dst, LiftoffRegister lhs,
+                                       LiftoffRegister rhs) {
+  bailout(kSimd, "pmin unimplemented");
+}
+
+void LiftoffAssembler::emit_f64x2_pmax(LiftoffRegister dst, LiftoffRegister lhs,
+                                       LiftoffRegister rhs) {
+  bailout(kSimd, "pmax unimplemented");
+}
+
 void LiftoffAssembler::emit_f32x4_splat(LiftoffRegister dst,
                                         LiftoffRegister src) {
   bailout(kUnsupportedArchitecture, "emit_f32x4_splat");
@@ -690,6 +700,16 @@ void LiftoffAssembler::emit_f32x4_max(LiftoffRegister dst, LiftoffRegister lhs,
   bailout(kUnsupportedArchitecture, "emit_f32x4max");
 }
 
+void LiftoffAssembler::emit_f32x4_pmin(LiftoffRegister dst, LiftoffRegister lhs,
+                                       LiftoffRegister rhs) {
+  bailout(kSimd, "pmin unimplemented");
+}
+
+void LiftoffAssembler::emit_f32x4_pmax(LiftoffRegister dst, LiftoffRegister lhs,
+                                       LiftoffRegister rhs) {
+  bailout(kSimd, "pmax unimplemented");
+}
+
 void LiftoffAssembler::emit_i64x2_splat(LiftoffRegister dst,
                                         LiftoffRegister src) {
   bailout(kUnsupportedArchitecture, "emit_i64x2splat");

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

@@ -631,6 +631,16 @@ void LiftoffAssembler::emit_f64x2_max(LiftoffRegister dst, LiftoffRegister lhs,
   bailout(kUnsupportedArchitecture, "emit_f64x2max");
 }
 
+void LiftoffAssembler::emit_f64x2_pmin(LiftoffRegister dst, LiftoffRegister lhs,
+                                       LiftoffRegister rhs) {
+  bailout(kSimd, "pmin unimplemented");
+}
+
+void LiftoffAssembler::emit_f64x2_pmax(LiftoffRegister dst, LiftoffRegister lhs,
+                                       LiftoffRegister rhs) {
+  bailout(kSimd, "pmax unimplemented");
+}
+
 void LiftoffAssembler::emit_f32x4_splat(LiftoffRegister dst,
                                         LiftoffRegister src) {
   bailout(kUnsupportedArchitecture, "emit_f32x4_splat");
@@ -694,6 +704,16 @@ void LiftoffAssembler::emit_f32x4_max(LiftoffRegister dst, LiftoffRegister lhs,
   bailout(kUnsupportedArchitecture, "emit_f32x4max");
 }
 
+void LiftoffAssembler::emit_f32x4_pmin(LiftoffRegister dst, LiftoffRegister lhs,
+                                       LiftoffRegister rhs) {
+  bailout(kSimd, "pmin unimplemented");
+}
+
+void LiftoffAssembler::emit_f32x4_pmax(LiftoffRegister dst, LiftoffRegister lhs,
+                                       LiftoffRegister rhs) {
+  bailout(kSimd, "pmax unimplemented");
+}
+
 void LiftoffAssembler::emit_i64x2_splat(LiftoffRegister dst,
                                         LiftoffRegister src) {
   bailout(kUnsupportedArchitecture, "emit_i64x2splat");