main: cleanup printing of IR

Panics don't usually happen nowadays, instead the compiler package
returns errors while compiling. If it still panics, this is usually from
within LLVM from where deferred functions are not run.

main.go

@@ -46,22 +46,20 @@ func Compile(pkgName, outpath string, spec *TargetSpec, config *BuildConfig, act
 	}
 
 	// Compile Go code to IR.
-	parseErr := func() error {
+	err = c.Compile(pkgName)
-		if config.printIR {
+	if err != nil {
-			// Run this even if c.Compile() panics.
+		return err
-			defer func() {
+	}
-				fmt.Println("Generated LLVM IR:")
+	if err := c.Verify(); err != nil {
-				fmt.Println(c.IR())
+		return err
-			}()
+	}
-		}
+
-		return c.Compile(pkgName)
+	if config.printIR {
-	}()
+		fmt.Println("Generated LLVM IR:")
-	if parseErr != nil {
+		fmt.Println(c.IR())
-		return parseErr
 	}
 
 	c.ApplyFunctionSections() // -ffunction-sections
-
 	if err := c.Verify(); err != nil {
 		return err
 	}