Add Om1 lowering with no optimizations.
This adds infrastructure for low-level x86-32 instructions, and the target lowering patterns.
Practically no optimizations are performed. Optimizations to be introduced later include liveness analysis, dead-code elimination, global linear-scan register allocation, linear-scan based stack slot coalescing, and compare/branch fusing. One optimization that is present is simple coalescing of stack slots for variables that are only live within a single basic block.
There are also some fairly comprehensive cross tests. This testing infrastructure translates bitcode using both Subzero and llc, and a testing harness calls both versions with a variety of "interesting" inputs and compares the results. Specifically, Arithmetic, Icmp, Fcmp, and Cast instructions are tested this way, across all PNaCl primitive types.
BUG=
R=jvoung@chromium.org
Review URL: https://codereview.chromium.org/265703002
diff --git a/src/IceTypes.cpp b/src/IceTypes.cpp
index b54c0d7..84cf410 100644
--- a/src/IceTypes.cpp
+++ b/src/IceTypes.cpp
@@ -41,7 +41,7 @@
if (Index < TypeAttributesSize) {
Width = TypeAttributes[Index].TypeWidthInBytes;
} else {
- assert(0 && "Invalid type for typeWidthInBytes()");
+ llvm_unreachable("Invalid type for typeWidthInBytes()");
}
return Width;
}
@@ -52,7 +52,7 @@
if (Index < TypeAttributesSize) {
Align = TypeAttributes[Index].TypeAlignInBytes;
} else {
- assert(0 && "Invalid type for typeAlignInBytes()");
+ llvm_unreachable("Invalid type for typeAlignInBytes()");
}
return Align;
}
@@ -65,7 +65,7 @@
Str << TypeAttributes[Index].DisplayString;
} else {
Str << "???";
- assert(0 && "Invalid type for printing");
+ llvm_unreachable("Invalid type for printing");
}
return Str;
