[WebAssembly] Reapply r252858, with svn add for the new file.

Switch to MC for instruction printing.

This encompasses several changes which are all interconnected:
 - Use the MC framework for printing almost all instructions.
 - AsmStrings are now live.
 - This introduces an indirection between LLVM vregs and WebAssembly registers,
   and a new pass, WebAssemblyRegNumbering, for computing a basic the mapping.
   This addresses some basic issues with argument registers and unused registers.
 - The way ARGUMENT instructions are handled no longer generates redundant
   get_local+set_local for every argument.

This also changes the assembly syntax somewhat; most notably, MC's printing
does not use sigils on label names, so those are no longer present, and
push/pop now have a sigil to keep them unambiguous.

The usage of set_local/get_local/$push/$pop will continue to evolve
significantly. This patch is just one step of a larger change.

llvm-svn: 252910

1 files changed, 22 insertions, 32 deletions

diff --git a/llvm/test/CodeGen/WebAssembly/call.ll b/llvm/test/CodeGen/WebAssembly/call.ll
index 7a03bdc4e5f..f44ba92045a 100644
--- a/llvm/test/CodeGen/WebAssembly/call.ll
+++ b/llvm/test/CodeGen/WebAssembly/call.ll
@@ -16,8 +16,8 @@ declare void @void_nullary()
 ; CHECK-LABEL: call_i32_nullary:
 ; CHECK-NEXT: .result i32
 ; CHECK-NEXT: .local i32
-; CHECK-NEXT: call $i32_nullary, push{{$}}
-; CHECK-NEXT: set_local 0, pop
+; CHECK-NEXT: call i32_nullary, $push{{$}}
+; CHECK-NEXT: set_local 0, $pop
 ; CHECK-NEXT: return (get_local 0)
 define i32 @call_i32_nullary() {
   %r = call i32 @i32_nullary()
@@ -27,8 +27,8 @@ define i32 @call_i32_nullary() {
 ; CHECK-LABEL: call_i64_nullary:
 ; CHECK-NEXT: .result i64
 ; CHECK-NEXT: .local i64
-; CHECK-NEXT: call $i64_nullary, push{{$}}
-; CHECK-NEXT: set_local 0, pop
+; CHECK-NEXT: call i64_nullary, $push{{$}}
+; CHECK-NEXT: set_local 0, $pop
 ; CHECK-NEXT: return (get_local 0)
 define i64 @call_i64_nullary() {
   %r = call i64 @i64_nullary()
@@ -38,8 +38,8 @@ define i64 @call_i64_nullary() {
 ; CHECK-LABEL: call_float_nullary:
 ; CHECK-NEXT: .result f32
 ; CHECK-NEXT: .local f32
-; CHECK-NEXT: call $float_nullary, push{{$}}
-; CHECK-NEXT: set_local 0, pop
+; CHECK-NEXT: call float_nullary, $push{{$}}
+; CHECK-NEXT: set_local 0, $pop
 ; CHECK-NEXT: return (get_local 0)
 define float @call_float_nullary() {
   %r = call float @float_nullary()
@@ -49,8 +49,8 @@ define float @call_float_nullary() {
 ; CHECK-LABEL: call_double_nullary:
 ; CHECK-NEXT: .result f64
 ; CHECK-NEXT: .local f64
-; CHECK-NEXT: call $double_nullary, push{{$}}
-; CHECK-NEXT: set_local 0, pop
+; CHECK-NEXT: call double_nullary, $push{{$}}
+; CHECK-NEXT: set_local 0, $pop
 ; CHECK-NEXT: return (get_local 0)
 define double @call_double_nullary() {
   %r = call double @double_nullary()
@@ -58,7 +58,7 @@ define double @call_double_nullary() {
 }
 
 ; CHECK-LABEL: call_void_nullary:
-; CHECK-NEXT: call $void_nullary{{$}}
+; CHECK-NEXT: call void_nullary{{$}}
 ; CHECK-NEXT: return
 define void @call_void_nullary() {
   call void @void_nullary()
@@ -69,11 +69,9 @@ define void @call_void_nullary() {
 ; CHECK-NEXT: .param i32
 ; CHECK-NEXT: .result i32
 ; CHECK-NEXT: .local i32, i32
-; CHECK-NEXT: get_local push, 0
-; CHECK-NEXT: set_local 1, pop
-; CHECK-NEXT: call $i32_unary, push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop
-; CHECK-NEXT: return (get_local 2)
+; CHECK-NEXT: call i32_unary, $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop
+; CHECK-NEXT: return (get_local 1)
 define i32 @call_i32_unary(i32 %a) {
   %r = call i32 @i32_unary(i32 %a)
   ret i32 %r
@@ -84,13 +82,9 @@ define i32 @call_i32_unary(i32 %a) {
 ; CHECK-NEXT: .param i32
 ; CHECK-NEXT: .result i32
 ; CHECK-NEXT: .local i32, i32, i32
-; CHECK-NEXT: get_local push, 1
-; CHECK-NEXT: set_local 2, pop
-; CHECK-NEXT: get_local push, 0
-; CHECK-NEXT: set_local 3, pop
-; CHECK-NEXT: call $i32_binary, push, (get_local 3), (get_local 2){{$}}
-; CHECK-NEXT: set_local 4, pop
-; CHECK-NEXT: return (get_local 4)
+; CHECK-NEXT: call i32_binary, $push, (get_local 0), (get_local 1){{$}}
+; CHECK-NEXT: set_local 2, $pop
+; CHECK-NEXT: return (get_local 2)
 define i32 @call_i32_binary(i32 %a, i32 %b) {
   %r = call i32 @i32_binary(i32 %a, i32 %b)
   ret i32 %r
@@ -99,9 +93,7 @@ define i32 @call_i32_binary(i32 %a, i32 %b) {
 ; CHECK-LABEL: call_indirect_void:
 ; CHECK-NEXT: .param i32
 ; CHECK-NEXT: .local i32
-; CHECK-NEXT: get_local push, 0
-; CHECK-NEXT: set_local 1, pop
-; CHECK-NEXT: call_indirect (get_local 1){{$}}
+; CHECK-NEXT: call_indirect (get_local 0){{$}}
 ; CHECK-NEXT: return
 define void @call_indirect_void(void ()* %callee) {
   call void %callee()
@@ -112,18 +104,16 @@ define void @call_indirect_void(void ()* %callee) {
 ; CHECK-NEXT: .param i32
 ; CHECK-NEXT: .result i32
 ; CHECK-NEXT: .local i32, i32
-; CHECK-NEXT: get_local push, 0
-; CHECK-NEXT: set_local 1, pop
-; CHECK-NEXT: call_indirect (get_local 1), push{{$}}
-; CHECK-NEXT: set_local 2, pop
-; CHECK-NEXT: return (get_local 2)
+; CHECK-NEXT: call_indirect (get_local 0), $push{{$}}
+; CHECK-NEXT: set_local 1, $pop
+; CHECK-NEXT: return (get_local 1)
 define i32 @call_indirect_i32(i32 ()* %callee) {
   %t = call i32 %callee()
   ret i32 %t
 }
 
 ; CHECK-LABEL: tail_call_void_nullary:
-; CHECK-NEXT: call $void_nullary{{$}}
+; CHECK-NEXT: call void_nullary{{$}}
 ; CHECK-NEXT: return{{$}}
 define void @tail_call_void_nullary() {
   tail call void @void_nullary()
@@ -131,7 +121,7 @@ define void @tail_call_void_nullary() {
 }
 
 ; CHECK-LABEL: fastcc_tail_call_void_nullary:
-; CHECK-NEXT: call $void_nullary{{$}}
+; CHECK-NEXT: call void_nullary{{$}}
 ; CHECK-NEXT: return{{$}}
 define void @fastcc_tail_call_void_nullary() {
   tail call fastcc void @void_nullary()
@@ -139,7 +129,7 @@ define void @fastcc_tail_call_void_nullary() {
 }
 
 ; CHECK-LABEL: coldcc_tail_call_void_nullary:
-; CHECK-NEXT: call $void_nullary
+; CHECK-NEXT: call void_nullary
 ; CHECK-NEXT: return{{$}}
 define void @coldcc_tail_call_void_nullary() {
   tail call coldcc void @void_nullary()