[wasm-simd] Implement pmin/pmax

F32x4 and F64x2 pmin and pmax were accepted into the proposal [0], this
removes all the ifdefs and todo guarding the prototypes, and moves these
instructions out of the post-mvp flag.

[0] WebAssembly/simd#122

Bug: v8:10904
Change-Id: I4e0c2f29ddc5d7fc19a209cd02b3d369617574a0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2405802
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69855}

Author: ngzhian

src/compiler/backend/instruction-selector.cc

@@ -2686,18 +2686,6 @@ void InstructionSelector::VisitI64x2MinU(Node* node) { UNIMPLEMENTED(); }
 void InstructionSelector::VisitI64x2MaxU(Node* node) { UNIMPLEMENTED(); }
 #endif  // !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_S390X
 
-#if !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_IA32 && \
-    !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_S390X && !V8_TARGET_ARCH_MIPS && \
-    !V8_TARGET_ARCH_MIPS64
-// TODO(v8:10501) Prototyping pmin and pmax instructions.
-void InstructionSelector::VisitF32x4Pmin(Node* node) { UNIMPLEMENTED(); }
-void InstructionSelector::VisitF32x4Pmax(Node* node) { UNIMPLEMENTED(); }
-void InstructionSelector::VisitF64x2Pmin(Node* node) { UNIMPLEMENTED(); }
-void InstructionSelector::VisitF64x2Pmax(Node* node) { UNIMPLEMENTED(); }
-#endif  // !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_IA32
-        // && !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_S390X &&
-        // !V8_TARGET_ARCH_MIPS && !V8_TARGET_ARCH_MIPS64
-
 #if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_S390X && \
     !V8_TARGET_ARCH_IA32 && !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_MIPS &&   \
     !V8_TARGET_ARCH_MIPS64

src/wasm/wasm-opcodes.h

@@ -429,6 +429,8 @@ bool IsJSCompatibleSignature(const FunctionSig* sig, const WasmFeatures&);
   V(F32x4Div, 0xfde7, s_ss)                  \
   V(F32x4Min, 0xfde8, s_ss)                  \
   V(F32x4Max, 0xfde9, s_ss)                  \
+  V(F32x4Pmin, 0xfdea, s_ss)                 \
+  V(F32x4Pmax, 0xfdeb, s_ss)                 \
   V(F64x2Abs, 0xfdec, s_s)                   \
   V(F64x2Neg, 0xfded, s_s)                   \
   V(F64x2Sqrt, 0xfdef, s_s)                  \
@@ -438,6 +440,8 @@ bool IsJSCompatibleSignature(const FunctionSig* sig, const WasmFeatures&);
   V(F64x2Div, 0xfdf3, s_ss)                  \
   V(F64x2Min, 0xfdf4, s_ss)                  \
   V(F64x2Max, 0xfdf5, s_ss)                  \
+  V(F64x2Pmin, 0xfdf6, s_ss)                 \
+  V(F64x2Pmax, 0xfdf7, s_ss)                 \
   V(I32x4SConvertF32x4, 0xfdf8, s_s)         \
   V(I32x4UConvertF32x4, 0xfdf9, s_s)         \
   V(F32x4SConvertI32x4, 0xfdfa, s_s)         \
@@ -475,14 +479,10 @@ bool IsJSCompatibleSignature(const FunctionSig* sig, const WasmFeatures&);
   V(F32x4AddHoriz, 0xfdb2, s_ss)        \
   V(F32x4RecipApprox, 0xfdb3, s_s)      \
   V(F32x4RecipSqrtApprox, 0xfdbc, s_s)  \
-  V(F32x4Pmin, 0xfdea, s_ss)            \
-  V(F32x4Pmax, 0xfdeb, s_ss)            \
   V(F32x4Ceil, 0xfdd8, s_s)             \
   V(F32x4Floor, 0xfdd9, s_s)            \
   V(F32x4Trunc, 0xfdda, s_s)            \
   V(F32x4NearestInt, 0xfddb, s_s)       \
-  V(F64x2Pmin, 0xfdf6, s_ss)            \
-  V(F64x2Pmax, 0xfdf7, s_ss)            \
   V(F64x2Ceil, 0xfddc, s_s)             \
   V(F64x2Floor, 0xfddd, s_s)            \
   V(F64x2Trunc, 0xfdde, s_s)            \

test/cctest/wasm/test-run-wasm-simd.cc

@@ -775,22 +775,13 @@ WASM_SIMD_TEST(F32x4Max) {
   RunF32x4BinOpTest(execution_tier, lower_simd, kExprF32x4Max, JSMax);
 }
 
-// TODO(v8:10501) Prototyping pmin and pmax instructions.
-#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64 || \
-    V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_S390X || V8_TARGET_ARCH_MIPS || \
-    V8_TARGET_ARCH_MIPS64
 WASM_SIMD_TEST_NO_LOWERING(F32x4Pmin) {
-  FLAG_SCOPE(wasm_simd_post_mvp);
   RunF32x4BinOpTest(execution_tier, lower_simd, kExprF32x4Pmin, Minimum);
 }
 
 WASM_SIMD_TEST_NO_LOWERING(F32x4Pmax) {
-  FLAG_SCOPE(wasm_simd_post_mvp);
   RunF32x4BinOpTest(execution_tier, lower_simd, kExprF32x4Pmax, Maximum);
 }
-#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64 ||
-        // V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_S390X || V8_TARGET_ARCH_MIPS ||
-        // V8_TARGET_ARCH_MIPS64
 
 void RunF32x4CompareOpTest(TestExecutionTier execution_tier,
                            LowerSimd lower_simd, WasmOpcode opcode,
@@ -1409,22 +1400,13 @@ WASM_SIMD_TEST(F64x2Div) {
   RunF64x2BinOpTest(execution_tier, lower_simd, kExprF64x2Div, Div);
 }
 
-// TODO(v8:10501) Prototyping pmin and pmax instructions.
-#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64 || \
-    V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_S390X || V8_TARGET_ARCH_MIPS || \
-    V8_TARGET_ARCH_MIPS64
 WASM_SIMD_TEST_NO_LOWERING(F64x2Pmin) {
-  FLAG_SCOPE(wasm_simd_post_mvp);
   RunF64x2BinOpTest(execution_tier, lower_simd, kExprF64x2Pmin, Minimum);
 }
 
 WASM_SIMD_TEST_NO_LOWERING(F64x2Pmax) {
-  FLAG_SCOPE(wasm_simd_post_mvp);
   RunF64x2BinOpTest(execution_tier, lower_simd, kExprF64x2Pmax, Maximum);
 }
-#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM64 ||
-        // V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_S390X || V8_TARGET_ARCH_MIPS ||
-        // V8_TARGET_ARCH_MIPS64
 
 void RunF64x2CompareOpTest(TestExecutionTier execution_tier,
                            LowerSimd lower_simd, WasmOpcode opcode,