Optimize 64-bit compares with zero

crosstest/test_icmp.cpp

Index: crosstest/test_icmp.cpp
diff --git a/crosstest/test_icmp.cpp b/crosstest/test_icmp.cpp
index 60575450a13b4f26bddc682ea5484a480c315833..5e716a94a481d0cd655a8bb9fa25094bf011e687 100644
--- a/crosstest/test_icmp.cpp
+++ b/crosstest/test_icmp.cpp
@@ -29,6 +29,14 @@ ICMP_U_TABLE
 #undef X
 
 #define X(cmp, op)                                                             \
+  bool icmp_zero##cmp(uint8_t a) { return a op 0; }                            \

[Jim Stichnoth, 2015/10/14 18:04:49]

Can you just add these to the above list, like it's done in the .h file?

[sehr, 2015/10/15 00:19:34]

Done.

+  bool icmp_zero##cmp(uint16_t a) { return a op 0; }                           \
+  bool icmp_zero##cmp(uint32_t a) { return a op 0; }                           \
+  bool icmp_zero##cmp(uint64 a) { return a op 0; }
+ICMP_U_TABLE
+#undef X
+
+#define X(cmp, op)                                                             \
   bool icmp##cmp(myint8_t a, myint8_t b) { return a op b; }                    \
   bool icmp##cmp(int16_t a, int16_t b) { return a op b; }                      \
   bool icmp##cmp(int32_t a, int32_t b) { return a op b; }                      \
@@ -38,3 +46,11 @@ ICMP_U_TABLE
   v16si8 icmp##cmp(v16si8 a, v16si8 b) { return a op b; }
 ICMP_S_TABLE
 #undef X
+
+#define X(cmp, op)                                                             \
+  bool icmp_zero##cmp(myint8_t a) { return a op 0; }                           \
+  bool icmp_zero##cmp(int16_t a) { return a op 0; }                            \
+  bool icmp_zero##cmp(int32_t a) { return a op 0; }                            \
+  bool icmp_zero##cmp(int64 a) { return a op 0; }
+ICMP_S_TABLE
+#undef X