more return optimizaton

breaking change: requireRange no longer returns its input

Author: turbocrime

.gas-snapshot

@@ -1,44 +1,44 @@
 ArrayTest:test_decodeEmptyArray() (gas: 3436)
 ArrayTest:test_decodeLargeArray() (gas: 3480)
-ArrayTest:test_decodeMixedArray() (gas: 6558)
+ArrayTest:test_decodeMixedArray() (gas: 6463)
 ArrayTest:test_decodeNestedArray() (gas: 7342)
 ArrayTest:test_decodeSingleElementArray() (gas: 4226)
-BytesTest:test_Bytes32_short() (gas: 4275)
-BytesTest:test_decodeEmptyBytes() (gas: 3861)
-BytesTest:test_decodeLongBytes() (gas: 3868)
-BytesTest:test_decodeMediumBytes() (gas: 992)
-BytesTest:test_decodeShortBytes() (gas: 3861)
-BytesTest:test_skipBytes() (gas: 780)
+BytesTest:test_Bytes32_short() (gas: 4183)
+BytesTest:test_decodeEmptyBytes() (gas: 3772)
+BytesTest:test_decodeLongBytes() (gas: 3779)
+BytesTest:test_decodeMediumBytes() (gas: 903)
+BytesTest:test_decodeShortBytes() (gas: 3772)
+BytesTest:test_skipBytes() (gas: 774)
 ComparisonTest:test_decodeArrayU8_CBORDecoder() (gas: 5274)
 ComparisonTest:test_decodeArrayU8_ReadCbor() (gas: 2334)
 ComparisonTest:test_decodeFalse_CBORDecoder() (gas: 916)
 ComparisonTest:test_decodeFalse_ReadCbor() (gas: 425)
 ComparisonTest:test_decodeFixedArray_CBORDecoder() (gas: 9207)
-ComparisonTest:test_decodeFixedArray_ReadCbor() (gas: 4402)
+ComparisonTest:test_decodeFixedArray_ReadCbor() (gas: 4307)
 ComparisonTest:test_decodeInteger_CBORDecoder() (gas: 884)
 ComparisonTest:test_decodeInteger_ReadCbor() (gas: 554)
 ComparisonTest:test_decodeNull_CBORDecoder() (gas: 396)
 ComparisonTest:test_decodeNull_ReadCbor() (gas: 240)
 ComparisonTest:test_decodeStringWithWeirdChar_CBORDecoder() (gas: 2356)
-ComparisonTest:test_decodeStringWithWeirdChar_ReadCbor() (gas: 1052)
+ComparisonTest:test_decodeStringWithWeirdChar_ReadCbor() (gas: 957)
 ComparisonTest:test_decodeString_CBORDecoder() (gas: 3869)
-ComparisonTest:test_decodeString_ReadCbor() (gas: 1125)
+ComparisonTest:test_decodeString_ReadCbor() (gas: 1030)
 ComparisonTest:test_decodeTrue_CBORDecoder() (gas: 937)
 ComparisonTest:test_decodeTrue_ReadCbor() (gas: 483)
 HeaderTest:test_header() (gas: 4270)
 HeaderTest:test_header32_u16() (gas: 3637)
 HeaderTest:test_header32_u32() (gas: 3611)
 MapTest:test_decodeEmptyMap() (gas: 539)
-MapTest:test_decodeNestedMap() (gas: 4369)
-MapTest:test_decodeSingleKeyMap() (gas: 5909)
-MapTest:test_deeplyNestedStructure() (gas: 10262)
-NIntTest:test_decodeLongNInt8() (gas: 3647)
-NIntTest:test_decodeNInt16() (gas: 3806)
-NIntTest:test_decodeNInt32() (gas: 3789)
-NIntTest:test_decodeNInt64() (gas: 3826)
-NIntTest:test_decodeNInt8() (gas: 3668)
-NIntTest:test_decodeShortNInt8() (gas: 3571)
-NIntTest:test_decodeSmallNInts() (gas: 4410)
+MapTest:test_decodeNestedMap() (gas: 3977)
+MapTest:test_decodeSingleKeyMap() (gas: 5814)
+MapTest:test_deeplyNestedStructure() (gas: 9968)
+NIntTest:test_decodeLongNInt8() (gas: 3646)
+NIntTest:test_decodeNInt16() (gas: 3805)
+NIntTest:test_decodeNInt32() (gas: 3788)
+NIntTest:test_decodeNInt64() (gas: 3825)
+NIntTest:test_decodeNInt8() (gas: 3667)
+NIntTest:test_decodeShortNInt8() (gas: 3570)
+NIntTest:test_decodeSmallNInts() (gas: 4408)
 PeekTest:test_isArray_false() (gas: 3181)
 PeekTest:test_isArray_true() (gas: 3160)
 PeekTest:test_isBool_false() (gas: 3158)
@@ -68,37 +68,37 @@ PeekTest:test_isUInt_false() (gas: 3202)
 PeekTest:test_isUInt_true() (gas: 3227)
 PeekTest:test_isUndefined_false() (gas: 3240)
 PeekTest:test_isUndefined_true() (gas: 3162)
-RangeTest:test_requireComplete() (gas: 321)
-RangeTest:test_requireRange() (gas: 3712)
-ReadBignum_Test:test_Integer() (gas: 14048)
-ReadBignum_Test:test_NInt256_max() (gas: 4713)
-ReadBignum_Test:test_NInt256_middle() (gas: 5973)
-ReadBignum_Test:test_NInt256_multi() (gas: 4206)
-ReadBignum_Test:test_NInt256_random(int256) (runs: 256, μ: 5616, ~: 5616)
-ReadBignum_Test:test_NInt256_single() (gas: 4207)
-ReadBignum_Test:test_UInt256_max() (gas: 4522)
-ReadBignum_Test:test_UInt256_middle() (gas: 5789)
-ReadBignum_Test:test_UInt256_multi() (gas: 4088)
-ReadBignum_Test:test_UInt256_random(uint256) (runs: 256, μ: 4581, ~: 4581)
-ReadBignum_Test:test_UInt256_single() (gas: 4381)
-ReadCidSha256_Test:test_Cid() (gas: 869)
-ReadCidSha256_Test:test_Cid_multicodec_raw() (gas: 815)
-ReadCidSha256_Test:test_Cid_random(uint256) (runs: 256, μ: 4276, ~: 4276)
+RangeTest:test_requireComplete() (gas: 322)
+RangeTest:test_requireRange() (gas: 387)
+ReadBignum_Test:test_Integer() (gas: 12961)
+ReadBignum_Test:test_NInt256_max() (gas: 4699)
+ReadBignum_Test:test_NInt256_middle() (gas: 5870)
+ReadBignum_Test:test_NInt256_multi() (gas: 4192)
+ReadBignum_Test:test_NInt256_random(int256) (runs: 256, μ: 5602, ~: 5602)
+ReadBignum_Test:test_NInt256_single() (gas: 4193)
+ReadBignum_Test:test_UInt256_max() (gas: 4508)
+ReadBignum_Test:test_UInt256_middle() (gas: 5686)
+ReadBignum_Test:test_UInt256_multi() (gas: 4074)
+ReadBignum_Test:test_UInt256_random(uint256) (runs: 256, μ: 4567, ~: 4567)
+ReadBignum_Test:test_UInt256_single() (gas: 4367)
+ReadCidSha256_Test:test_Cid() (gas: 853)
+ReadCidSha256_Test:test_Cid_multicodec_raw() (gas: 799)
+ReadCidSha256_Test:test_Cid_random(uint256) (runs: 256, μ: 4260, ~: 4260)
 ReadCidSha256_Test:test_NullableCid_nullCbor() (gas: 3440)
-ReadCidSha256_Test:test_NullableCid_random(uint256) (runs: 256, μ: 4137, ~: 4145)
+ReadCidSha256_Test:test_NullableCid_random(uint256) (runs: 256, μ: 4121, ~: 4129)
 SimpleTest:test_decodeFalse() (gas: 3305)
 SimpleTest:test_decodeTrue() (gas: 3311)
-SimpleTest:test_skipNull() (gas: 431)
-SimpleTest:test_skipUndefined() (gas: 474)
+SimpleTest:test_skipNull() (gas: 427)
+SimpleTest:test_skipUndefined() (gas: 470)
 StringTest:test_String1() (gas: 3368)
-StringTest:test_String32_short() (gas: 4254)
-StringTest:test_decodeEmptyString() (gas: 3807)
-StringTest:test_decodeLongString() (gas: 3851)
-StringTest:test_decodeMediumString() (gas: 992)
-StringTest:test_decodeShortString() (gas: 3871)
-StringTest:test_skipString() (gas: 782)
-TagTest:test_decodeExpectedTag() (gas: 682)
-TagTest:test_decodeTag() (gas: 3591)
+StringTest:test_String32_short() (gas: 4162)
+StringTest:test_decodeEmptyString() (gas: 3718)
+StringTest:test_decodeLongString() (gas: 3762)
+StringTest:test_decodeMediumString() (gas: 903)
+StringTest:test_decodeShortString() (gas: 3782)
+StringTest:test_skipString() (gas: 776)
+TagTest:test_decodeExpectedTag() (gas: 678)
+TagTest:test_decodeTag() (gas: 3590)
 UIntTest:test_decodeLongUInt8() (gas: 3506)
 UIntTest:test_decodeShortUInt8() (gas: 3451)
 UIntTest:test_decodeSmallInts() (gas: 4152)