[WebAssembly] Enable register coloring and register stackifying.
This also takes the push/pop syntax another step forward, introducing stack
slot numbers to make it easier to see how expressions are connected. For
example, the value pushed in $push7 is popped in $pop7.
And, this begins an experiment with making get_local and set_local implicit
when an operation directly uses or defines a register. This greatly reduces
clutter. If this experiment succeeds, it may make sense to do this for
const instructions as well.
And, this introduces more special code for ARGUMENTS; hopefully this code
will soon be obviated by proper support for live-in virtual registers.
llvm-svn: 253465
diff --git a/llvm/test/CodeGen/WebAssembly/global.ll b/llvm/test/CodeGen/WebAssembly/global.ll
index 1d818d1..d349566 100644
--- a/llvm/test/CodeGen/WebAssembly/global.ll
+++ b/llvm/test/CodeGen/WebAssembly/global.ll
@@ -10,7 +10,9 @@
@llvm.used = appending global [1 x i32*] [i32* @g], section "llvm.metadata"
; CHECK: foo:
-; CHECK: i32.const $push, answer
+; CHECK: i32.const $push0, answer{{$}}
+; CHECK-NEXT: i32.load $0, $pop0{{$}}
+; CHECK-NEXT: return $0{{$}}
define i32 @foo() {
%a = load i32, i32* @answer
ret i32 %a