[llvm] r263976 - [WebAssembly] Implement the eqz instructions.

[Dan Gohman via llvm-commits]

Author: djg
Date: Mon Mar 21 14:54:41 2016
New Revision: 263976

URL: http://llvm.org/viewvc/llvm-project?rev=263976&view=rev
Log:
[WebAssembly] Implement the eqz instructions.

Modified:
    llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrInteger.td
    llvm/trunk/test/CodeGen/WebAssembly/i32.ll
    llvm/trunk/test/CodeGen/WebAssembly/i64.ll

Modified: llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrInteger.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrInteger.td?rev=263976&r1=263975&r2=263976&view=diff
==============================================================================
--- llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrInteger.td (original)
+++ llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrInteger.td Mon Mar 21 14:54:41 2016
@@ -54,6 +54,13 @@ defm CLZ : UnaryInt<ctlz, "clz ">;
 defm CTZ : UnaryInt<cttz, "ctz ">;
 defm POPCNT : UnaryInt<ctpop, "popcnt">;
 
+def EQZ_I32 : I<(outs I32:$dst), (ins I32:$src),
+                [(set I32:$dst, (setcc I32:$src, 0, SETEQ))],
+                "i32.eqz \t$dst, $src">;
+def EQZ_I64 : I<(outs I32:$dst), (ins I64:$src),
+                [(set I32:$dst, (setcc I64:$src, 0, SETEQ))],
+                "i64.eqz \t$dst, $src">;
+
 } // Defs = [ARGUMENTS]
 
 // Expand the "don't care" operations to supported operations.

Modified: llvm/trunk/test/CodeGen/WebAssembly/i32.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/WebAssembly/i32.ll?rev=263976&r1=263975&r2=263976&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/WebAssembly/i32.ll (original)
+++ llvm/trunk/test/CodeGen/WebAssembly/i32.ll Mon Mar 21 14:54:41 2016
@@ -188,3 +188,14 @@ define i32 @popcnt32(i32 %x) {
   %a = call i32 @llvm.ctpop.i32(i32 %x)
   ret i32 %a
 }
+
+; CHECK-LABEL: eqz32:
+; CHECK-NEXT: .param i32{{$}}
+; CHECK-NEXT: .result i32{{$}}
+; CHECK-NEXT: i32.eqz $push0=, $0{{$}}
+; CHECK-NEXT: return $pop0{{$}}
+define i32 @eqz32(i32 %x) {
+  %a = icmp eq i32 %x, 0
+  %b = zext i1 %a to i32
+  ret i32 %b
+}

Modified: llvm/trunk/test/CodeGen/WebAssembly/i64.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/WebAssembly/i64.ll?rev=263976&r1=263975&r2=263976&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/WebAssembly/i64.ll (original)
+++ llvm/trunk/test/CodeGen/WebAssembly/i64.ll Mon Mar 21 14:54:41 2016
@@ -188,3 +188,14 @@ define i64 @popcnt64(i64 %x) {
   %a = call i64 @llvm.ctpop.i64(i64 %x)
   ret i64 %a
 }
+
+; CHECK-LABEL: eqz64:
+; CHECK-NEXT: .param i64{{$}}
+; CHECK-NEXT: .result i32{{$}}
+; CHECK-NEXT: i64.eqz $push0=, $0{{$}}
+; CHECK-NEXT: return $pop0{{$}}
+define i32 @eqz64(i64 %x) {
+  %a = icmp eq i64 %x, 0
+  %b = zext i1 %a to i32
+  ret i32 %b
+}