fix legalization of nonexistent call return values

2 files changed, 20 insertions, 2 deletions

diff --git a/src/analyzer.js b/src/analyzer.js
index 3921cab8..df5a435e 100644
--- a/src/analyzer.js
+++ b/src/analyzer.js
@@ -324,12 +324,13 @@ function analyzer(data, sidePass) {
                 }
                 // call, return: Return the first 32 bits, the rest are in temp
                 case 'call': {
-                  bits = getBits(value.type);
-                  var elements = getLegalVars(item.assignTo, bits);
                   var toAdd = [value];
                   // legalize parameters
                   legalizeFunctionParameters(value.params);
+                  // legalize return value, if any
                   if (value.assignTo && isIllegalType(item.type)) {
+                    bits = getBits(value.type);
+                    var elements = getLegalVars(item.assignTo, bits);
                     // legalize return value
                     value.assignTo = elements[0].ident;
                     for (var j = 1; j < elements.length; j++) {
diff --git a/tests/cases/call_i64_noret.ll b/tests/cases/call_i64_noret.ll
new file mode 100644
index 00000000..a8a30fc0
--- /dev/null
+++ b/tests/cases/call_i64_noret.ll
@@ -0,0 +1,17 @@
+; ModuleID = 'tests/hello_world.bc'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
+target triple = "i386-pc-linux-gnu"
+
+@.str = private unnamed_addr constant [15 x i8] c"hello, world!\0A\00", align 1 ; [#uses=1 type=[15 x i8]*]
+
+; [#uses=0]
+define i32 @main() {
+entry:
+  %retval = alloca i32, align 4                   ; [#uses=1 type=i32*]
+  store i32 0, i32* %retval
+  call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([15 x i8]* @.str, i32 0, i32 0), i64 0) ; [#uses=0 type=i32]
+  ret i32 1
+}
+
+; [#uses=1]
+declare i32 @printf(i8*, ...)