[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, 63 insertions, 105 deletions

diff --git a/llvm/test/CodeGen/WebAssembly/conv.ll b/llvm/test/CodeGen/WebAssembly/conv.ll
index d2d567677ab..946d88bc7e3 100644
--- a/llvm/test/CodeGen/WebAssembly/conv.ll
+++ b/llvm/test/CodeGen/WebAssembly/conv.ll
@@ -9,11 +9,9 @@ target triple = "wasm32-unknown-unknown"
 ; CHECK-NEXT: .param i64{{$}}
 ; CHECK-NEXT: .result i32{{$}}
 ; CHECK-NEXT: .local i64, i32{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i32.wrap/i64 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i32.wrap/i64 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i32 @i32_wrap_i64(i64 %x) {
   %a = trunc i64 %x to i32
   ret i32 %a
@@ -23,11 +21,9 @@ define i32 @i32_wrap_i64(i64 %x) {
 ; CHECK-NEXT: .param i32
 ; CHECK-NEXT: .result i64
 ; CHECK-NEXT: .local i32, i64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i64.extend_s/i32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i64.extend_s/i32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i64 @i64_extend_s_i32(i32 %x) {
   %a = sext i32 %x to i64
   ret i64 %a
@@ -37,11 +33,9 @@ define i64 @i64_extend_s_i32(i32 %x) {
 ; CHECK-NEXT: .param i32
 ; CHECK-NEXT: .result i64
 ; CHECK-NEXT: .local i32, i64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i64.extend_u/i32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i64.extend_u/i32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i64 @i64_extend_u_i32(i32 %x) {
   %a = zext i32 %x to i64
   ret i64 %a
@@ -51,11 +45,9 @@ define i64 @i64_extend_u_i32(i32 %x) {
 ; CHECK-NEXT: .param f32
 ; CHECK-NEXT: .result i32
 ; CHECK-NEXT: .local f32, i32{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i32.trunc_s/f32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i32.trunc_s/f32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i32 @i32_trunc_s_f32(float %x) {
   %a = fptosi float %x to i32
   ret i32 %a
@@ -65,11 +57,9 @@ define i32 @i32_trunc_s_f32(float %x) {
 ; CHECK-NEXT: .param f32
 ; CHECK-NEXT: .result i32
 ; CHECK-NEXT: .local f32, i32{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i32.trunc_u/f32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i32.trunc_u/f32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i32 @i32_trunc_u_f32(float %x) {
   %a = fptoui float %x to i32
   ret i32 %a
@@ -79,11 +69,9 @@ define i32 @i32_trunc_u_f32(float %x) {
 ; CHECK-NEXT: .param f64
 ; CHECK-NEXT: .result i32
 ; CHECK-NEXT: .local f64, i32{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i32.trunc_s/f64 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i32.trunc_s/f64 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i32 @i32_trunc_s_f64(double %x) {
   %a = fptosi double %x to i32
   ret i32 %a
@@ -93,11 +81,9 @@ define i32 @i32_trunc_s_f64(double %x) {
 ; CHECK-NEXT: .param f64
 ; CHECK-NEXT: .result i32
 ; CHECK-NEXT: .local f64, i32{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i32.trunc_u/f64 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i32.trunc_u/f64 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i32 @i32_trunc_u_f64(double %x) {
   %a = fptoui double %x to i32
   ret i32 %a
@@ -107,11 +93,9 @@ define i32 @i32_trunc_u_f64(double %x) {
 ; CHECK-NEXT: .param f32
 ; CHECK-NEXT: .result i64
 ; CHECK-NEXT: .local f32, i64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i64.trunc_s/f32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i64.trunc_s/f32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i64 @i64_trunc_s_f32(float %x) {
   %a = fptosi float %x to i64
   ret i64 %a
@@ -121,11 +105,9 @@ define i64 @i64_trunc_s_f32(float %x) {
 ; CHECK-NEXT: .param f32
 ; CHECK-NEXT: .result i64
 ; CHECK-NEXT: .local f32, i64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i64.trunc_u/f32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i64.trunc_u/f32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i64 @i64_trunc_u_f32(float %x) {
   %a = fptoui float %x to i64
   ret i64 %a
@@ -135,11 +117,9 @@ define i64 @i64_trunc_u_f32(float %x) {
 ; CHECK-NEXT: .param f64
 ; CHECK-NEXT: .result i64
 ; CHECK-NEXT: .local f64, i64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i64.trunc_s/f64 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i64.trunc_s/f64 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i64 @i64_trunc_s_f64(double %x) {
   %a = fptosi double %x to i64
   ret i64 %a
@@ -149,11 +129,9 @@ define i64 @i64_trunc_s_f64(double %x) {
 ; CHECK-NEXT: .param f64
 ; CHECK-NEXT: .result i64
 ; CHECK-NEXT: .local f64, i64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: i64.trunc_u/f64 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: i64.trunc_u/f64 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i64 @i64_trunc_u_f64(double %x) {
   %a = fptoui double %x to i64
   ret i64 %a
@@ -163,11 +141,9 @@ define i64 @i64_trunc_u_f64(double %x) {
 ; CHECK-NEXT: .param i32
 ; CHECK-NEXT: .result f32
 ; CHECK-NEXT: .local i32, f32{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: f32.convert_s/i32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: f32.convert_s/i32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define float @f32_convert_s_i32(i32 %x) {
   %a = sitofp i32 %x to float
   ret float %a
@@ -177,11 +153,9 @@ define float @f32_convert_s_i32(i32 %x) {
 ; CHECK-NEXT: .param i32
 ; CHECK-NEXT: .result f32
 ; CHECK-NEXT: .local i32, f32{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: f32.convert_u/i32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: f32.convert_u/i32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define float @f32_convert_u_i32(i32 %x) {
   %a = uitofp i32 %x to float
   ret float %a
@@ -191,11 +165,9 @@ define float @f32_convert_u_i32(i32 %x) {
 ; CHECK-NEXT: .param i32
 ; CHECK-NEXT: .result f64
 ; CHECK-NEXT: .local i32, f64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: f64.convert_s/i32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: f64.convert_s/i32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define double @f64_convert_s_i32(i32 %x) {
   %a = sitofp i32 %x to double
   ret double %a
@@ -205,11 +177,9 @@ define double @f64_convert_s_i32(i32 %x) {
 ; CHECK-NEXT: .param i32
 ; CHECK-NEXT: .result f64
 ; CHECK-NEXT: .local i32, f64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: f64.convert_u/i32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: f64.convert_u/i32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define double @f64_convert_u_i32(i32 %x) {
   %a = uitofp i32 %x to double
   ret double %a
@@ -219,11 +189,9 @@ define double @f64_convert_u_i32(i32 %x) {
 ; CHECK-NEXT: .param i64
 ; CHECK-NEXT: .result f32
 ; CHECK-NEXT: .local i64, f32{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: f32.convert_s/i64 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: f32.convert_s/i64 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define float @f32_convert_s_i64(i64 %x) {
   %a = sitofp i64 %x to float
   ret float %a
@@ -233,11 +201,9 @@ define float @f32_convert_s_i64(i64 %x) {
 ; CHECK-NEXT: .param i64
 ; CHECK-NEXT: .result f32
 ; CHECK-NEXT: .local i64, f32{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: f32.convert_u/i64 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: f32.convert_u/i64 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define float @f32_convert_u_i64(i64 %x) {
   %a = uitofp i64 %x to float
   ret float %a
@@ -247,11 +213,9 @@ define float @f32_convert_u_i64(i64 %x) {
 ; CHECK-NEXT: .param i64
 ; CHECK-NEXT: .result f64
 ; CHECK-NEXT: .local i64, f64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: f64.convert_s/i64 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: f64.convert_s/i64 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define double @f64_convert_s_i64(i64 %x) {
   %a = sitofp i64 %x to double
   ret double %a
@@ -261,11 +225,9 @@ define double @f64_convert_s_i64(i64 %x) {
 ; CHECK-NEXT: .param i64
 ; CHECK-NEXT: .result f64
 ; CHECK-NEXT: .local i64, f64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: f64.convert_u/i64 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: f64.convert_u/i64 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define double @f64_convert_u_i64(i64 %x) {
   %a = uitofp i64 %x to double
   ret double %a
@@ -275,11 +237,9 @@ define double @f64_convert_u_i64(i64 %x) {
 ; CHECK-NEXT: .param f32
 ; CHECK-NEXT: .result f64
 ; CHECK-NEXT: .local f32, f64{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: f64.promote/f32 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: f64.promote/f32 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define double @f64_promote_f32(float %x) {
   %a = fpext float %x to double
   ret double %a
@@ -289,11 +249,9 @@ define double @f64_promote_f32(float %x) {
 ; CHECK-NEXT: .param f64
 ; CHECK-NEXT: .result f32
 ; CHECK-NEXT: .local f64, f32{{$}}
-; CHECK-NEXT: get_local push, 0{{$}}
-; CHECK-NEXT: set_local 1, pop{{$}}
-; CHECK-NEXT: f32.demote/f64 push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK-NEXT: f32.demote/f64 $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define float @f32_demote_f64(double %x) {
   %a = fptrunc double %x to float
   ret float %a